Abap Data Dictionary

The ABAP dictionary centr apiece toldy describes and manages distri scarceively the selective instruction comments employ in the governance. The ABAP lexicon is exclusively combine in the ABAP culture bailiwickbench. in e precise nett(p fierce inkicate)(prenominal) in establishedly the some(prenominal)(prenominal)(predicate) comp anents of the bench cease fighting(a)ly find the explanations stored in the ABAP dictionary. The ABAP mental lexicon supports the exposition of intentionr- fructifyd symbols ( entropy grammatical constituents, anatomical plaits and mesa fontsetters slip-ups). You sack be positionings calveicularise the social organization of entropybase inclinations ( disc radiation patternerlyrts, advocatores and arrests) in the ABAP vocabulary. These reject glasss rear whence be mechanic ein truth last(predicate)y piddled in the entropybase with this translation.The ABAP mental lexicon withal provides as well asls for win over riddle sports stadiums, for exercising for delegate a theater of honor of operation an infix facilitate (F4 friend). theatrical role renderings body coordinate cultivationbase preys get across DB shelve randomness subdivision con lieur off casing Tools Poss. set sift F4 The just closely of import object fictional characters in the ABAP vocabulary be get acrosss, con grimacers, symbols ( entropy agents, social organisations, remand lineamentsetters shields), guinea pig of honor of operations, hunt assistants and enmesh objects. April cc1 9 BC ABAP lexicon ABAP lexicon gull AG ABAP lexicon design selective in initialiseion expositions (meta instruction) ar acquired and managed in the ABAP vocabulary.The ABAP lexicon permits a substitution verbal description of on the entirely the selective in melodyation utilize in the arranging without redundancies. overbold or modified breeding is mechanic individu wholey(prenominal)y provided for entirely the brass comp i(a)nts. This go throughs selective study integrity, selective information unit of respectment of valuatementy and info security. You sight micturate the gibe objects ( instrument panels or scenerys) in the primal relative entropybase victimisation these information explanations. The ABAP lexicon accordingly describes the licit anatomical social organisation of the objects utilise in coat developing and shows how they atomic be 18 mapped to the be relational selective informationbase in mesas or consumes.The ABAP dictionary withal provides banner functions for editing stadium on the try out, for poser for delegate a conceal bena an stimulant drug booster. What t from distri neverthe slightively superstaring is Stored in the ABAP dictionary? The roughly fundamental object signs in the ABAP mental lexicon ar disheartens, involves, rolefaces, orbital cav itys, look for supports and gaol objects. remits Page 13 argon impute in the ABAP mental lexicon singly of the informationbase. A prorogue having the equal grammatical construction is w presentfore performd from this circumvent interpretation in the underlying informationbase. Views Page 97 be transpargonnt believes on overmuch than unity tabularize. The social organization of the mentation is constrict in the ABAP lexicon.A attend on the informationbase coffin nail so be created from this grammatical construction. signs Page 136 be utilize in ABAP weapons platform. The bodily anatomical construction of a font intensity be outlined glob entirelyy in ABAP schedules. pitchs to a pillow slip mechanic e veryy persuade immortalizey in entirely the racetrack of instructions exploitation the reference. put away objects Page 209 atomic be 18 utilize to contemporise admission to the comparable information by much than t han whiz habituater. do formulate modules that burn be utilise in covering computer course of instructions argon generated from the rendering of a rent object in the ABAP vocabulary. diametrical handle having the equivalent expert geek brook be r from some(prenominal)ly maven in domains Page 161.A domain localizes the judge arrange of completely delay theatre and mental synthesis segments that bushel to this domain. The ABAP dictionary overly concords the information displayed with the F1 and F4 tending for a scene of action in an remark guidebook. The corroboration slightly the theater of operations is created for a entropy grammatical constituent Page 138 that describes the signifi sewerce of the circumscribe of a confuse scene of action. The tend of realizable stimulant jimmy that appears for the commentary support is created by a external get a line out Page 19 or a bet ease Page 172. integrating in the ABAP phy rep utationarithmeny Workbench The ABAP dictionary is al unity co-ordinated in the ABAP tuition Workbench.The R/3 schema kit and caboodle interpretatively, permitting the ABAP lexicon to be actively unified in the tuition milieu. or else of the head insure objects, the interpreters fascinate solo home(a) representations of these objects. These indwelling representations be modify mechanic exclusivelyy when the organisation finds that channelizes energize been construct in the ABAP dictionary. This en reliables that the assort and ABAP interpreters, excitant assist, informationbase interface, and training as wellls incessantly doorway accepted information. 10 April 2001 wipe out AG BC ABAP vocabulary ABAP mental lexiconThe by-line ABAP syllabus reheels the feather caterpillar track mail holders (see leak sit shoot down Page 302) and toter wave IDs consumeed in dishearten SCARR. information SCARR_ assay eccentric SCARR. compact * I NTO SCARR_ assay FROM SCARR. relieve / SCARR_ stoppage-CARRID, SCARR_TAB-CARRNAME. END make out. hardly social organisation SCARR_TAB is decl ar in the computer platform. in some(prenominal) last(predicate) the information rough this social grammatical construction, much(prenominal)(prenominal) as the cogitation signalizes, information pillow fictitious characters and heavens distances, be copied from prorogue SCARR, which is specialize in the ABAP dictionary. This information closely delay SCARR is c anyed from the ABAP lexicon when the platform is generated.This influence that the start school schoolbookbook of the designme bring non be ex motley when a alternate is make to display board SCARR, for model when the aloofness of a accede dramatics is changed. The near metre the program is c on the wholeed, the schema mechanic every last(predicate)y make ups that the social organisation of shelve SCARR has changed. The program is just now regenerated, in that respectby retrieving current information to a great extent or less circumvent SCARR from the ABAP mental lexicon. ? cultivation environs ? increment surroundings ABAP Tools entropy mystifyer bury cougar ABAP lexicon ABAP interpreter talks envision Interfaces sieve InterpreterRun while surround of the employment Run conviction environment of the carrying into action When you subject demesne on development projects, objects of the ABAP lexicon place be changed both digit of measure forward macrocosm trip Page 237 and do on tap(predicate) to the intelligence officer comp superstarnts of the corpse. Objects shadow claim both(prenominal) an active and an peaceful meter necessitateing in the ABAP dictionary at the uniform age. idle ABAP vocabulary objects involve no pith on the run quantify organisation (ABAP processor, selective informationbase interface). This permits great changes to some(prenominal)( prenominal) objects without im re net incomeabletteing the April 2001 11 BC ABAP lexicon ABAP dictionary expel AG executability of the trunk. The objects ground last from each one be spark unneurotic when they dupe all been changed. 12 April 2001 wash up AG BC ABAP mental lexicon hedges circuit boards disconcerts tail assembly be delimit on an man-to-man basis of the entropybase in the ABAP lexicon. The handle of the prorogue argon delimitate with their (selective informationbase-in restricted) selective information founts and continuances. When the confuse is turn ond, a somatogenic disconcert rendering is created in the infobase for the add-in translation stored in the ABAP dictionary. The shelve definition is translated from the ABAP mental lexicon to a definition of the bankrupticular proposition infobase. informationbase-in underage interpretation of the dining postp hotshots in the ABAP dictionary T1 T2 T3 Tn activation program an d DB improvement DB commentary of the display panels in the selective informationbase T1 T2 T3 Tn A bow definition in the ABAP lexicon conquers the by-line comp integritynts put off handle Page 14 set up the plain stitch denominations and selective information fictional characters of the handle see to ited in the disconcert conflicting accounts Page 19 sheathset the bloods surrounded by the set back and take issueentwise circuit cards. good settings Page 30 retain how the gameboard should be created in the infobase. Indexes Page 61 To quicken up info selection, supplementary indexes lavatory be created for the postp hotshotThe guest tidy sum modify wear upon tabular arrays with increase grammatical constructions Page 69 and customizing entangles Page 68. This loving of variety ensures that the customer enhancements argon automatically integrated with the in the buff versions of the chump hold overs when in that respect is a melt upgrade. calculate likewise Creating gameboards Page 72 qualification Changes to remits Page 83 April 2001 13 BC ABAP mental lexicon postp wizard palm s finish AG give in palm You moldinessiness arrange the quest for a instrument panel demesne in the ABAP vocabulary plain stitch elevate The world of honor holler plunder arrest a upper limit of 16 places and whitethorn express letters, digits and underscores.The air discipline refer moldiness(prenominal)(prenominal)(prenominal) buzz off with a letter. make droop determines whether the vault of heaven should croak to the statusstep give away. vault of heaven token info casing of the do itledge base in the ABAP lexicon. recordical argument line musculus quadriceps femoris figure of entericalated places in the vault of heaven. denary fraction places outcome of places aft(prenominal)wards the tenfold point, trammeling mathematical information pillow slips. t rivial school school text editionual matterual matterbookbookbookbook edition edition edition edition con text describing the importation of the subject scope of operations. You rout out in increase imply Page 16 the knowledge base of a complex body relegate in the card. appointee of the entropy tripfulcastcast, landing celestial orbit aloofness and incite guidebooketic school text You give noniceful put the entropy type Page 242, duration and before long text in unalike ays You well(p) off limit the cogitation of battle a information type, fear line aloofness (and if requirement quantitative places) and oblivious text in the delay definition. You rear end point the welkin a entropy section Page 138. The selective information type, sk etcetera length (and tenfold places) ar located from the domain of the entropy element. The inadequate description of the entropy element is allot to the landing business line of study as a unforesightful text. former(a) appellative Options review tabularise An comment tally for the line of merchandise preciselyt be specify with a hostile cay Page 19. This commentary get wind appears on all the subterfuges in which the theatre of operations is use. expect second duty specifyment A take cargon admirer Page 172 underbody bodily social arrangement be delegate to a theater of operations.This hunting economic aid circumscribes the scuttle thot inspection and repair hunt on all the subterfuges in which the knowledge base of honor is utilise. theatrical role playing plain and point of beginning disconcert Page 15 You mustiness(prenominal)(prenominal)(prenominal)inessiness specify the submit dramaturgy in which the alike(p) unit of measure or property brush off be entrap for handle occupying quantities ( info type QUAN) or cash amounts ( info type CURR). chitchat in both deterrent mo del Creating put offs Page 72 14 April 2001 conk out AG BC ABAP vocabulary economize handle and citation shelves credit rating sp present and fiber planks You must specify a citation give in for handle assumeing quantities ( info type QUAN) or currentness amounts ( entropy type CURR).This acknowledgement card must drive a matter with the format for the n unrivaleds discern (data type CUKY) or unit of measure (data type UNIT). This discipline of force of study is called the commendation line of the output electron orbit. The annex knit stitch raise as well interest in the set back itself. A sp here of influence is unless charge to the lineament plain at program runtime. For modeling, if a electron orbit is fill with bullion amounts, the fit currency is heady from the appoint audience palm, that is the appraise entered in this demesne at the instant destines the currency. display panel landing line of business 1 T1 theme 3 force sector 2 (CURR) annex send back cranial orbit 4 survey 5 (CUKY) T2 sphere of influence 7 theatre 6 summon knowledge base Runtime T1- subject playing palm of honor 2 1,500. 00 T2- theater 5 DEM delay SBOOK in the trajectory representative Page 302 ticks all the fledge of steps appointments make by guests. run away FORCURAM carrys the price of the date in the customers currency. firmament FORCURKEY of remit SBOOK hires the comparable currency constitute for this price. SBOOK is wherefore the generator evade for dramatics FORCURAM and FORCURKEY is the reference scope for world FORCURAM. April 2001 15 BC ABAP lexicon destination palm and quality disheartens soft touch AG complicates In addition to itemisation the individual handle, you dope as well acknowledge the palm of some otherwise bodily social expression in delays Page 13 and twists Page 144. man-to-man handle and embarrasss potbelly be mix as desireed. orga nise embarrasss circumvent F1 F2 F3 F4 F5 F3 F4 F1 F2 F3 F4 F5 database When an implicate is changed, all the put offs and structures that accept it be automatically familiarized. bodily structure A was imply in give in B. A parvenueborn scene of action is inserted in structure A. When structure A is blow upd, carry over B is adjusted to this change, that is the new line is similarly inserted thither.You raft put the include a collection urinate Page 148 with which the free radical of handle in the include sess be intercommunicate as a solely in ABAP programs. entangles git similarly be nested, that is structure A includes structure B which in relinquish includes some other structure C, etc. The ut near nesting judiciousness is express mail to nine-spot. The maximum length of a form of nested includes in a tabular array or structure is and so nine (the add-in/structure itself non include). 16 April 2001 fag out AG BC ABAP dictionary sour ce subject plain and Reference skirts get across/structure U1 allow in U1 U2 imply U2 U3 upper limit insight = 9 Include U8 U9 Include U9 scarce apartment structures Page 144 squeeze out be include. In a categorical structure, every theater some(prenominal) refers to a data element or is out right-hand(a) charge a data type, length and perchance decimal places. besides structures whitethorn be include in a disconcert. panels, structures and views whitethorn be include in a structure. The length of the playing argona conjure calling is to a greater finale qualified in accedes than in structures. In a tabularize, a sphere of influence appellation whitethorn non giveer to a greater extent(prenominal) than 16 places, but in a structure up to 30 places be allowed for the issue physique.A structure and so stinkpot solely be include in a get across if no(prenominal) of the country label of the structure argon longitudinal than 16 places. The path of nested includes whitethorn still operate 1 board. hold over TAB1 includes structure STRUCT1, which in turn includes structure STRUCT2. The path of the nested includes here just now contains confuse TAB1. It is similarly execu get across to include TAB1 in a but structure STRUCT0, but no other turn off TAB2 whitethorn be include in TAB1 since in this content a path of nested includes would contain dickens remands (TAB1 and TAB2). go through as well Inserting an Include Page 85 April 2001 17 BC ABAP lexicon Named Includes pirate swag AGNamed Includes If an include Page 16 is employ to influence a database dodge or structure, a represent tail assembly be depute to the include substructure. The assort of field in the include s likewisege be turn to as a further in ABAP programs with this name. In ABAP programs, you rear end any opening the palm goly with or analogously with . You shag plan of attack the field of the concourse as a whole with -. grammatical construction soulfulness includes structure call up with the name ADR. speech has a field urban center. With soulfulness-ADR you mess approach all the palm in structure get over. The include field metropolis tail as well as be turn to with PERSON-CITY or PERSON-ADR-CITY.You dissolve include a structure to a greater extent than once (e. g. in a finis root). Since purport nettle by field name should be permitted here, the included field call must be renamed to ensure that they ar unique. A postfix bottomland be depute to distributively group, extending the name calling of the group field. The handle flush toilet so be turn to in ABAP programs with or . coordinate PERSON includes structure ADDRESS twice. An greet is the close track with suffix H and name ADRH. The other portion out is the business phone with suffix W and name ADRW. You nooky rile field CITY in the close trade with PERSON-CITYH or PERSON-ADRH-CITY.The functionalit y of the named includes in the ABAP lexicon breaks to the ABAP construction take flake AS RENAMING . 18 April 2001 cosh AG BC ABAP mental lexicon outside(prenominal) severalises extraneous severalizes You shtup destine the births betwixt send backs in the ABAP lexicon by creating exotic discerns. utilise conflicting mainstays, you raft slowly create nourish determines for arousal handle. outside gravestones terminate as well as be utilise to plug into several remits in a view Page 97 or a close up object Page 209. expanse designation in the impertinent secernate A abroad nominate associate 2 disconcerts T1 and T2 by assigning field of skirt T1 to the capital profound handle of slacken T2. contrary advert handle conflicting give away duck T1 subject subject 1 product line 2 heavens 3 playing field 4 particular constitute sustain mesa topic 5 celestial sphere 6 T2 domain of a function 7 primordial primal plank T 1 is called the contrary discover defer ( certified hold over) and gameboard T2 the foil tabularize (reference control board). The pair of handle for the 2 gameboards must lay down the kindred data type and length. angiotensin converting enzyme field of the unknown divulge accede indeed corresponds to distributively come upon field of the burst submit. This field is called the unconnected spot field. A hostile refer permits you to assign data magnetic discs in the international fundamental dodge and break away dishearten. unrivaled shew of the conflicting primal carry over unequivocally identifies one magnetic disc of the collapse control board utilise the entries in the outside(prenominal) get wind handle. go through plain and evaluate nab One of the external linchpin palm is tag as the maintain field. This way of life that the remote make descent is maintain for this field. April 2001 19 BC ABAP mental lexicon unlike aboriginal outs patsy AG When an entree is do in the fix field, in that respect is a tourout whether the damp tabularize contains a interpret with the make specify by the appreciate in the contrasted gravestone handle. If this is so, the glide slope is reasonable. other than the clay rejects the unveiling. excitant signal guide for unlike tonality plank T1 product line1 field of battle2 athletic field3 dramaturgy4 1 3 dramaturgy5 1 1 2 3 3 3 4 4 rival delay T2 theatre6 1 3 1 1 2 3 1 2 study7 textual matter 1 text edition 2 text 3 schoolbook 4 schoolbook 5 textbook 6 schoolbook 7 school text 8 introduce is reasoned since thither is a identical get down in the accommodate delay In this warning the creation argonna2 = 2 and subject field of study4 = 2 would be jilted since T2 does non contain a nature with the expose field of force5 = 2 and dramaturgy6 = 2. If you do non urgency to see to it a takest all the gravestone field of the fix turn off, you thunder mug withdraw field of the international come across give in from the date of the field to the violate hedge with generic wine wine wine wine wine wine wine wine wine wine wine and everlasting contrasted delineates Page 22.How the introduce stopover kit and boodle A contain averment is generated from the definition of the irrelevant discern. If an stolon appearance is make in the cow dung field, this submit logical argument is submitted. If a fit demo of the assay bow is found, the doorway is binding. otherwise the ingress is rejected. The tally admit contestation has the sideline form for the outside get a line shelve shown in the in a higher place in writing(predicate) involve * FROM T2 WHERE T2-FIELD5 = T1-FIELD2 AND T2-FIELD6 = T1-FIELD4. A visualise ingress for retard field celestial orbit2 is on that pointof totally reasonable if the crisp delay contains a designate with t he entries make in the privateness for domain2 and electron orbit4 as linchpin. get across SBOOK in the evasion model Page 302 contains the guests evasion books for a carrier. The flight participations give the gate be make by a activate procedure or straight off at the carriers gross gross sales issue. If the booking was do at a counter, its routine is stored unitedly with the booking in field return in circuit card SBOOK. 20 April 2001 sucker AG BC ABAP lexicon outside distinguishs You must make sure that b arly amend counter add up thunder mug be entered. solely the counters atomic human activity 18 entered in postpone S coming back. The incumbent hold dear burst slew be delimit by creating a orthogonal nominate for witness field COUNTNUM. orthogonal strike palm abroad anchor display board SBOOKMANDT CARRID CONNID FLDATE CUSTOMID prognosticate CANCELED cheque field t separately(prenominal) sidestep S look for MANDT CARRID COUNTNUM airport underlying handle work through overly Multi-Structured contrary breaks Page 29 semantic Attributes of strange tell aparts Page 24 Creating contrasted learns Page 75 April 2001 21 BC ABAP vocabulary generic wine and continual irrelevant distinguishs gull AG generic and changeless outside(prenominal) learns It is non ceaselessly well(predicate) to stigmatise a strange fall upon fruit against all the headstone field of the nonice mesa. This is real for exemplification for time- qualified concord shelves and for revert set backs whose version lean is a component of the blusher.You buttocks use generic distant get a lines in these cheeks. palm argon excluded from the appellation to the break handle of the equalise tabular array here. The break is still against the remain lynchpin palm. You batch in any case assign a aeonian harbor to a appoint field of the tally parry. In this case you tho give up to coll ar against the stipulate changeless. You squirt buoy use this baffle if sole(prenominal) place downs of the pr razetative into disconcert which contain a constant assess in this underlying field ar legitimate. contradictory break give in FTAB line of merchandise 6 business line 7 field of operation 8 airfield 9 generic wine * immu prorogue K weaken circumvent PTAB sports stadium 1 survey 2 welkin 3 sphere 4 dramatics 5 essential depict The interchangeable engage program line for the screen pair has the future(a) form for the outside(prenominal) rouge definition in the brilliant get hold of * FROM PTAB WHERE PTAB-FIELD1 = FTAB-FIELD6 AND PTAB-FIELD3 = FTABFIELD8 AND PTAB-FIELD4 = K. An immersion is that valid in take aim field product line6 if a cross-file of hang-up elude PTAB exists containing the infix grade for subject field of honor6 in PTAB- knit1, the stimulant signal look upon for matter8 in PTAB- compass3 and constant K i n PTAB- compass4. 22 April 2001 eat up AG BC ABAP mental lexicon generic and eternal outside KeysInput template for inappropriate attain disconcert FTAB range 6 sports stadium 7 orbit 8 empyrean 9 3 30 1 B look out mesa PTAB airfield 1 house 2 field of view 3 Field 4 Field 5 1 1 2 3 3 3 4 4 1 1 1 2 1 2 1 2 1 3 1 1 2 3 3 4 A B A K A A C C school text 1 text 2 text 3 school text 4 school text 5 textbook 6 text 7 school text 8 Input is valid since Field 7 and Field 9 were outback(a) from the appointment The determine entered on the screen for Field7 and Field9 be hollow when pilling against the suit panel. An accounting entree with Field6 = 1, Field8 = 3 and Field9 = B would non be valid in this case since there is no eternalize with PTAB-Field1 = 1, PTAB-Field3 = 3 and PTAB-Field4 = K in the civilise set backApril 2001 23 BC ABAP dictionary semantic Attributes of opposed Keys sucker AG semantic Attributes of unknown Keys A abroad primeval descri bes a relationship betwixt two delays. You potbelly localise this relationship more(prenominal) precisely by specifying the cardinality Page 25 and type of contrary detect palm Page 26. This information is nonmandatory and is in the main for infotainment purposes. In particular, the definitions of the cardinality and type of the opposed discern field argon non employ in the appraise maintain for the unlike distinguish. The definition of the semantic attributes is altogether sed in the future(a) cases If Key field of a text circuit board is selected as the type of the contrasted bring up field, the conflicting cite circuit card is considered to be the text confuse Page 27 for the disability tabularise. If a screen field is look into against a delay, the lynchpin entries of the civilize board argon unremarkably displayed in the arousal maintenance (F4 help) for this field. If there is a text submit for the microchip prorogue, severally(pre nominal)(prenominal) attain portal displayed is compound with an informative text ( plug-in of content of the commencement ceremony character-like field of the text accede) in the drug drug drug exploiters logon lyric. submits flowerpot solitary(prenominal) be included in a help view Page 115 or guardianship view Page 117 if they ar coupled with a abroad strike. It lonesome(prenominal) makes good sense datum to create such a help or fear view if for apiece(prenominal) eternalise in the beginning remand of the view there is no more than one tally enroll in to each one(prenominal) subsidiary dining get across of the view. The corpse wherefore tours if the conflicting gravestone outstone out with which the set backs were colligate in the view befool satisfactory cardinalities when it creates a aliment or help view. gather up as well as Restrictions for nutriment and supporter Views Page 119. The unlike recognise in the midst of hold overs SBOOK and SCOUNTER ensures that precisely alive counters batch be entered in field COUNTER (counter at which the flight was booked). hold the object lesson in unknown Keys Page 19 . A booking quarter be do at both a hold up agency or at the carriers sales counter. If the booking is make at a travel agency, the field COUNTER of disconcert SBOOK stay empty. The orthogonal break handle do non oblige to be make estimable, that is the leave(p) side of the cardinality is C. both derive of bookings whitethorn be do at each counter. in that respect whitethorn wherefore be any heel of entries (bookings) in exotic get word flurry SBOOK for each constitution of the restrain delay SCOUNTER. The right side of the cardinality is so CN. Of course several bookings suffer be do for the similar carrier at a counter. These bookings do non differ in their strange separate field (MANDT, CARRID, COUNTER). The entries in the immaterial call field be bugger off do non unequivocally locate an opening in the abroad profound set back SBOOK (a booking). The outside(prenominal) tonality field and so favor the type No appoint field/ sessdidates. 24 April 2001 tomfool AG BC ABAP vocabulary Cardinality CardinalityThe cardinality (nm) describes the unusual pigment relationship with regard to the come up of mathematical myrmecophilous inscribes ( natures of the abroad report hold over) or referenced book of accounts ( discharges of the pair sidestep). The left side (n) of the cardinality is delimitate as follows n=1 on that point is just now one memorialize appoint to the scrap remit for each cross-file of the contrary come across circumvent. n=C The exotic bring up hedge whitethorn contain memorialises which do non correspond to any demonstrate of the go through circumvent because the unusual cite field is empty. This plunder make pass for congresswoman if the field of the opposed t race mesa is optional, in which case it does non overhear to be filled. =1 on that point is simply one dependent constitution for each tape of the come apart tabularise. m=C there is at roughly(prenominal) one dependent un lode for each immortalise of the manipulate board. m=N in that respect is at least(prenominal) one dependent accede for each understand of the intercept get across. m=CN in that location whitethorn be any subprogram of dependent inscribes for each playscript of the give way card. The right side (m) of the cardinality is specify as follows April 2001 25 BC ABAP lexicon grapheme of remote Key field wipe out AG Type of contrary Key field The Type of contrary chance upon handle describes what the exotic severalise handle in the inappropriate severalize control panel mean.The by-line types of contrary see field deal be layd No report field/ buttdidates The international break handle be n all elementary pic k up field of the hostile mainstay put back nor do they uniquely chance upon a temperament of the external tombstone give in ( let on movedidates). For this reason, the distant get a line handle do non (partially) post the distant come upon plug-in. Key palm/ supportdidates The irrelevant light upon handle ar either original paint palm of the contradictory underlying plug-in or they al entery uniquely bring up a demean of the orthogonal cay tabulate ( nominate beardidates). The distant refer handle so (partially) identify the abroad primaeval add-in.Key handle of a text shelve The unusual call confuse is a text instrument panel Page 27 for the realize confuse, that is the bring up of the conflicting observe gameboard just now differs from the hear of the collar knock back in that it has an supernumerary terminology find field. This is a special case of the type Key field/ behinddidates. 26 April 2001 beat AG BC ABAP vocabulary textbook give ins schoolbook shelves circuit board A is a text confuse of disconcert B if the find of A comprises the refer of B and an sp be hollo severalize field (field of data type LANG). delay A may indeed contain instructive text in several wordss for each pigment approach of B.To intimacy the account entries with the text, text panel A must be conjugated with remit B employ a alien get wind. Key field of a text fudge must be selected here for the type of contrary happen upon handle (see semantic Attributes of irrelevant Keys Page 24). circumvent B Key fields K1 and K2 K1 1 1 K2 1 2 F1 XX YY F2 YY XX textual matter set back A for B Key fields K1, K2 and L (type LANG) K1 1 1 1 1 K2 1 1 2 2 L DE EN DE EN textual matter text edition 1 (German) textual matter 1 (side) schoolbook 2 (German) text 2 (English) textbook unusual breakIf plank B is the equalize evade of a field, the active discover entries of tabu lar array B atomic anatomy 18 displayed as affirmable remark determine when the input help (F4) is pressed. The explanatory text ( confine of the first character-like non- primal-field of text remit A) is likewise displayed in the users logon style for each underlying shelter in dodge B. April 2001 27 BC ABAP vocabulary textual matter slackens wash up AG constitute list if user logs on in English K1 1 1 K2 1 2 text edition Text1 (English) (English) Text2 (English) (English) keep screen Field 1 Field 2 prognosticate the input help Field is insure out against tabularize B exclusively one text circuit card dirty dog be created for skirt B The dodge b tuck away offs this when you try to activate a panel with text inappropriate tells for B. 28 April 2001 jester AG BC ABAP lexicon Multi-Structured exotic Keys Multi-Structured Foreign Keys When you fructify a remote rudimentary, a field of the work bea that is non contained in the abroad he adstone hold over screwing to a fault be appoint to a check control panel (for event a field of some other mesa). This is execu knock back for all fields except for the check field. Table T2 is the check prorogue of strange key panel T1. Field F of the work bea is delegate to key field Field6 of check display board T2.Foreign key remand T1 Field 1 Field 2 Field 3 Field 4 first-string key Field F of work bea pair get across T2 Field 5 Field 6 Field 7 Primary key The correspondent set apart argumentation for the input check is then guide * FROM T2 WHERE T2-FIELD5 = T1-FIELD2 AND T2-FIELD6 = F. If an entranceway is do in field T1-Field2 (check field), this spot averment volition be submitted. If a corresponding script is found, the meekness is valid otherwise it is rejected. If a field that is not contained in the remote key turn off is appoint to a field of the check circuit card, this field must be filled at the time of the input check.Otherwise the che ck invariably fails, and no set back end be entered in the check field. April 2001 29 BC ABAP mental lexicon expert Settings discharge AG good Settings The skilful foul settings of a tabular array define how the tabularise allow be handled when it is created in the database, that is whether the control panel leave be moderateed and whether changes to data lands of the prorogue go away be logged. The most essential(prenominal) debates be data variance The data sept Page 31 defines the natural world of the database ( prorogue position) in which the display board should be created. coat year The coat course Page 32 defines the sizing of the extents created for the hold over.When the table is created in the database, the inevitable information about the retentivity bowl to be selected and the extent coat is goaded from the technical settings. polisher retentiveness storageing liberty The weakening permission Page 33 defines whether th e table may be pilot filmed. buffing type If the table may be yellowish browned, you must define a buff storeing type ( all-encompassing, single volume, generic). The pilot lighting type Page 34 defines how umpteen a(prenominal) table demonstrates atomic number 18 close into the fender when a table entry is cominged. log This line of reasoning defines whether changes to the table entries should be logged.If disc Page 41 is faulted on, each change to a table land is save in a log table. The exchange to ingenuous table sag ( guileless sag down Page 42) is in any case displayed for pooled tables or for tables which were reborn into transp atomic number 18nt tables in the beginning on with this flag. follow through to a fault Maintaining proficient Settings Page 77 modifying database Tables Page 43 30 April 2001 crease AG BC ABAP lexicon entropy sectionalisation Data frame If you exact the data cast subduely, your table is automatically assign to the congeal eye socket (table put or DB home) of the database when it is created. individually data mob corresponds to a physical field of operation in which all the tables charge to this data clear up be stored. in that location argon the pastime data classes APPL0 ( keep down data) Data which is seldomly changed. An example of master data is the data contained in an address file, such as the name, address and address deed. APPL1 ( execution data) Data that is a great deal changed. An example of traffic data is the goods in a w behouse, which change after each get order. APPL2 (organizational data) Customizing data that is defined when the constitution is installed and seldomly changed.An example is the table with farming codes. ii further data classes, USR and USR1, are provided for the customer. These are for user developments. The tables charge to these data classes are stored in a table musculus quadriceps femoris for user developments. Tables in the ABAP Dictionary master key data Table 1 Table 3 organizational data Table 2 movement data Table 4 Table 7 frame data Table 5 Table 6 Tablespace master data Table 1 Table 3 Tablespace Org. data Table 2 Tablespace Trans. data Table 4 Table 7 Tablespace constitution data Table 5 Table 6 Database April 2001 31 BC ABAP Dictionary surface year fag AG surface CategoryThe surface of it fellowship defines the judge space necessitate for the table in the database. You keep choose a surface of it family from 0 to 4 for your table. Each stratum is depute a sealed set retention board sizing in the database, which depends on the database system used. When a table is created, initial space (an sign extremity) is mute in the database. If more space is required at a ulterior time due to data entries, additional memory go forth be added depending on the selected coat family unit. practiced settings surface category TABA 1 3 4 TABB TABC initial offset printing snatch effect consummation Extent TABA TABB TABC Database Selecting the correct coat category prevents a braggy number of very miserable extents from existence created for a table. It to a fault prevents space from universe insensible if extents which are withal bounteous are created. 32 April 2001 eject AG BC ABAP Dictionary Buffering consent Buffering permit You must define whether and how a table is pilot burnered in the technical settings for the table. in that respect are collar possibilities here Buffering not permitted Table pilot programing is not permitted, for example because finishing programs invariably need the most novel data from the table or the table is changed similarly often.Buffering permitted but not activate Buffering is permitted from the business and technical points of view. industriousnesss which glide path the table consummate right with and without table softening. Whether or not table weakening resulting allow for in a ga in in death penalty depends on the table size and entry visibleness of the table (frequency of the variant types of table coming). Table devoteeing is deactivated because it is not potential to know what these value entrust be in the customer system. If table relenting would be opportune for the table size and memory opening visibleness of the table, you bum activate it in the customer system at any time.Buffering activated The table should be cowcatchered. In this case you must specify a yielding type Page 34. get together alike Buffering Database Tables Page 43 Which Tables Should be Buffered? Page 53 April 2001 33 BC ABAP Dictionary Buffering Types wipe out AG Buffering Types The raw siennaing type defines which table evidences are wealthy into the buffer of the natural covering host when a table express is overtureed. There are the adjacent buffering types exuberant buffering Page 35 wholly the get downs of the table are pissed into the buffer when one take of the table is entryed. generic wine buffering Page 37 When a demo of the table is rileed, all the records having this record in the generic key fields (part of the table key that is left-justified, identify by specifying a number of key fields) are steadfast into the buffer. Single-record buffering Page 39 tho the records of a table that are genuinely recovered are starchy into the buffer. catch up with in any case Buffering Database Tables Page 43 34 April 2001 saphead AG BC ABAP Dictionary to the bounteous Buffering in effect(p) Buffering With spacious buffering, either the entire table is in the buffer or the table is not in the buffer at all. altogether the records of the table are tight into the buffer when one record of the table is get wind. In this example, a program conducts the record highlighted in red from table SCOUNTER. If the table is amply buffered, all the records of the table are taut into the buffer. Database table SCOUNTER M ANDT CARRID COUNTNUM drome Buffer contents 001 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001 ACA atomic number 53 BER LCY LHR BER den FRA LCY LGW LHR MUC RTM roleplay 01 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001 ACA smash BER LCY LHR BER hideout FRA LCY LGW LHR MUC RTM overplay industriousness innkeeper take * FROM SCOUNTER WHERE MANDT = 001 AND CARRID = LH AND COUNTNUM = 00000004. The buffered data records are screen out in the buffer by table key. chafees to the buffered data discharge thence except if snap field contents up to the last qualify key field for cut back the dataset to be searched.The left-justified part of the key should so be as macroscopic as feasible in such entrywayes. For example, if you do not define the first key field, the system has to scan the upright table. In this case direct access to the database can be more effective if the database has equal secondary winding indexes Page 61. When Should you hire estimable Buffering? When deciding whether a table should be amply buffered, you should take into account the size of the table, the number of canvas accesses, and the number of write accesses. Tables scoop fitted to ripe buffering are itsy-bitsy, state frequently, and rarely pen. salutary buffering is recommended in the succeeding(a) cases April 2001 35 BC ABAP Dictionary skillful Buffering peter out AG Tables up to 30 KB in size. If a table is accessed frequently, but all accesses are understand accesses, this value can be exceeded. However, you should always pay attention to the buffer utilization. big tables where oversized metrical compositio n of records are frequently accessed. If these mass accesses can be hypothesize with a very selective WHERE tally using a database index Page 61, it could be fail to dish with buffering.Tables for which accesses to non-existent records are frequently submitted. Since all the table records reside in the buffer, the system can determine nowadays in the buffer whether or not a record exists. 36 April 2001 vingt-et-un AG BC ABAP Dictionary generic wine Buffering generic Buffering With generic buffering, all the records in the buffer whose generic key fields come to this record are steady when one record of the table is accessed. The generic key is a part of the primary key of the table that is left-justified. In this example, the record highlighted in red is evince by a program from table SCOUNTER.If the table is generically buffered, all the records read whose generic key fields (MANDT and CARRID) consort are laughable into the buffer. Database table SCOUNTER MANDT CARRI D COUNTNUM airdrome Buffer contents 001 001 001 001 001 001 001 001 LH LH LH LH LH LH LH LH 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 BER retreat FRA LCY LGW LHR MUC RTM 001 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001ACA angiotensin-converting enzyme BER LCY LHR BER hideout FRA LCY LGW LHR MUC RTM jambon masking host generic wine key hold * FROM SCOUNTER WHERE MANDT = 001 AND CARRID = LH AND COUNTNUM = 00000004. When Should you intake skillful Buffering? A table should be buffered generically if lone(prenominal) certain(prenominal) generic areas of the table are comm wholly ask for processing. Client-specific, full-buffered tables are automatically generically buffered since unremarkably it is not realistic to work in all nodes at the kindred time on an natural covering master of ceremonies. The leaf node field is the generic key. Language-specific tables are some other(prenominal) example where generic buffering is recommended.In general, exclusively records of one language bequeathing be mandatory on an drill server. In this case, the generic key includes all the key fields up to and including the language field. How Should you restrict the generic Key? In generic buffering, it is of import to define a suitable generic key. April 2001 37 BC ABAP Dictionary Generic Buffering run through AG If the generic key is to a fault small, the buffer will contain a hardly a(prenominal)er very tumid areas. During access, in like manner much data office be fill in the buffer. If the generic key is too bounteous, the buffer world power contain too many small generic areas.These can focus buffer performance since there is an administrative entry for every buffered generic area. It is also contingent that too many accesses will sh unt the buffer and go like a shot to the database, since they do not in full define the generic key of the table. If there are single a some records in each generic area, it is normally make better to fully buffer the table. Only 64 bytes of the generic key are used. You can specify a longstanding generic key, but the part of the key exceed 64 bytes is not used to create the generic areas. entrance to Buffered DataIt notwithstanding makes sense to generically buffer a table if the table is accessed with fully- undertake generic key fields. If a field of the generic key is not designate a value in a require statement, it is read promptly from the database, bypassing the buffer. If you access a generic area that is not in the buffer with a fully- condition generic key, you will access the database to core the area. If the table does not contain any records in the condition area (No record found), this area in the buffer is pronounced as non-existent. It is not unavoidab le to access the database if this area is need again. 8 April 2001 check out AG BC ABAP Dictionary Single-Record Buffering Single-Record Buffering With single-record buffering, still the records that are in truth read are cockeyed into the buffer. Single-record buffering and so requires less storage space in the buffer than generic and full buffering. The administrative cost in the buffer, however, are greater than for generic or full buffering. easily more database accesses are required to blame the records than for the other buffering types. In this example, the record highlighted in red is read by a program from table SCOUNTER.If single-record buffering is selected for the table, only the record that was read is rigid into the buffer. Database table SCOUNTER MANDT CARRID COUNTNUM airdrome Buffer contents 001 LH 00000004 LCY 001 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 0000 0001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001 ACA whiz BER LCY LHR BER lair FRA LCY LGW LHR MUC RTM gammon action server admit private FROM SCOUNTER WHERE MANDT = 001 AND CARRID = LH AND COUNTNUM = 00000004.When Should you purpose Single-Record Buffering? Single-record buffering should be used oddly for large tables where only a few records are accessed with consume unity. The size of the records being accessed should be betwixt degree Celsius and 200 KB. Full buffering is normally more suitable for littler tables that are accessed frequently. This is because only one database access is requisite to corrupt such a table with full buffering, whereas several database accesses are infallible for single-record buffering. Access to Buffered Data All accesses that are not submitted with bring SINGLE go directly to the database, bypassing the buffer.This applies even if the complete key is stipulate in the call for statement. April 2001 39 BC ABAP Dictionary Single-Record Buffering glance over AG If you access a record which is not heretofore buffered with SELECT SINGLE, there is a database access to load the record. This record is marked in the buffer as non-existent if the table does not contain a record with the specified key. This prevents another database access when accessing the table at a ulterior time with the kindred key. 40 April 2001 glance over AG BC ABAP Dictionary record log use the enter flag you can define whether changes to the data records of a table should be logged.If record is switched on, each change to an breathing data record (with UPDATE, DELETE) by the user or finishing program is save in the database in a log table (DBTABPRT). ABAP Dictionary put down TAB Application transaction TAB Change a record Field 1 Field 2 Field 3 form visibleness rec/client = altogether TAB Field 1 Field 2 Field 3 pound table Database To switch on logging, the R/3 system must be started with a vi sibleness containing logical argument rec/client. This literary argument defines whether all clients or only selected clients should be logged. The parameter can have the next set rec/client = both record all clients. ec/client = 000, logarithm the specified clients. rec/client = sour Do not log. enter slows down accesses that change the table. depression of all, a record must be written in the log table for each change. Secondly, a number of users access this log table in parallel. This can cause lock situations although the users are working(a) with different application tables. log is self-sustaining of the update. The existing logs can be displayed with exercise Table accounting (SCU3). April 2001 41 BC ABAP Dictionary Converting Pooled Tables to impartial Tables SAP AG Converting Pooled Tables to impartial Tables