Editing Logical Database
Hi Experts,
I need to add a new select-option in an already existing LDB. I was able to add the new select-option but I cannot add the selection text. I go to SE36 and select Selection Text then click Change. But it does not allow to add a new selection text.
Points will be rewarded ASAP!
Thanks
try this..
TABLES: pernr.
data: i_tab type standard table of RSSELTEXTS with header line.
initialization.
i_tab-name = 'PNPPERNR'.
i_tab-kind = 'S'.
i_tab-text = 'Employee ID'.
append i_tab.
CALL FUNCTION 'SELECTION_TEXTS_MODIFY'
EXPORTING
program = 'ZESO_TEST'
tables
seltexts = i_tab
* EXCEPTIONS
* PROGRAM_NOT_FOUND = 1
* PROGRAM_CANNOT_BE_GENERATED = 2
* OTHERS = 3
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
Similar Messages
-
Query regarding Logical Database reports
Hi,
I have started doing pgm on Logical Database report using VBAK,VBAP and MARA. I took VBAK as the root node and VBAP& MARA as subnodes. The actual requirement is:- I am trying to place these tables in Application server for perfromance issue using Logical database. Based on sales, the items need to be be displayed. And based on Items, the material data should be displayed.So root node here is VBAK.
I have created these 3 nodes in SE36 tx.code. when I go back to se36 main screen and under "subobjects" ,I've selected "selections". I got a dialog box saying that "Nodes for which free selections are to be made". I have clicked on the radio buttons.And then clicked on "transfer" . I am getting a runtime error . Please let me know the solution.
Please do send me the actual process to go on with logical database reporting.hi,
look here <a href="http://help.sap.com/saphelp_47x200/helpdata/en/9f/db9bed35c111d1829f0000e829fbfe/frameset.htm">Editing Logical Databases</a>
pls reward usefuls answers
thx.
Andreas -
Selection part of Logical Database
I read about logical database somewhere on the net but it was not so clear. Can anyone explain to me about the selection part of the logical database???
Logical databases are special ABAP programs that retrieve data and make it available to application programs. The most common use of logical databases is still to read data from database tables and linking them to executable ABAP programs while setting the program contents. You edit logical databases using the Logical Database Builder in the ABAP Workbench.
However, since Release 4.5A, it has also been possible to call logical databases independently of this tool using the function module LDB_PROCESS. This allows you to call several logical databases from any ABAP program, nested in any way. It is also possible to call a logical database more than once in a program, if it has been programmed to allow this. This is particularly useful for executable programs, allowing them to use more than one logical database and process a database more than once.
Logical databases contain Open SQL statements that read data from the database. You do not therefore need to use SQL in your own programs. The logical database reads the program, stores them in the program if necessary, and then passes them line by line to the application program or the function module LDB_PROCESS using an interface work area.
http://help.sap.com/saphelp_nw2004s/helpdata/en/9f/db9b5e35c111d1829f0000e829fbfe/content.htm
A logical database is a special ABAP/4 program which combines the contents of certain database tables. You can link a logical database to an ABAP/4 report program as an attribute. The logical database then supplies the report program with a set of hierarchically structured table lines which can be taken from different database tables.
GO THROUGH LINKS -
http://www.sap-basis-abap.com/saptab.htm
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9bfa35c111d1829f0000e829fbfe/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9b5e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/c6/8a15381b80436ce10000009b38f8cf/frameset.htm
/people/srivijaya.gutala/blog/2007/03/05/why-not-logical-databases
Re: **LDB**
www.sapbrain.com/FAQs/TECHNICAL/SAP_ABAP_Logical_Database_FAQ.html
www.sap-img.com/abap/abap-interview-question.htm
www.sap-img.com/abap/quick-note-on-design-of-secondary-database-indexes-and-logical-databases.htm
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9b5e35c111d1829f0000e829fbfe/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/9f/db9bb935c111d1829f0000e829fbfe/content.htm
Logical databases are SAP standard programs that are desinged with selections screens that helps easy retrival and access of data from various tables in and efficient manner.
You can get to know more about the logical databases from the SAP documentation or the following links.
A logical database is a special ABAP/4 program which combines the contents of certain database tables. You can link a logical database to an ABAP/4 report program as an attribute. The logical database then supplies the report program with a set of hierarchically structured table lines which can be taken from different database tables.
Advantages of Logical database -
1) No need of programming for retrieval , meaning for data selection
2) Easy to use standard user interface, have check completeness of user input.
Disadvantages
1) Fast in case of lesser no. of tables But if the table is in the lowest level of hierarchy, all upper level tables should be read so performance is slower.
GO THROUGH LINKS -
http://www.sap-basis-abap.com/saptab.htm
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9bfa35c111d1829f0000e829fbfe/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9b5e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/c6/8a15381b80436ce10000009b38f8cf/frameset.htm
1. A logical database is in fact
a program only.
2. This LDB provides two main things :
a) a pre-defined selection screen
which handles all user inputs and validations
b) pre defined set of data
based upon the user selection.
3. So we dont have to worry about from
which tables to fetch data.
4. Moreover, this LDB Program,
handles all user-authorisations
and is efficient in all respects.
5. tcode is SLDB
good info about Logical Database. you can check the link.
http://www.geekinterview.com/question_details/1506
http://help.sap.com/saphelp_46c/helpdata/EN/35/2cd77bd7705394e10000009b387c12/frameset.htm
Re: How to Create and Use ldb in reports?
Re: Logical databases
http://help.sap.com/saphelp_46c/helpdata/en/9f/db9bed35c111d1829f0000e829fbfe/frameset.htm
Functions for displaying and changing logical databases:
Call Transaction SE36 or
Choose ABAP Workbench -> Development -> Programming environ. -> Logical databases
Interaction between database program and report:
During program processing, subroutines are performed in the database program and events are executed in the report.
To read data from a database tables we use logical database.
A logical database provides read-only access to a group of related tables to an ABAP/4 program.
advantages:-
The programmer need not worry about the primary key for each table.Because Logical database knows how the different tables relate to each other,and can issue the SELECT command with proper where clause to retrieve the data.
i)An easy-to-use standard user interface.
ii)check functions which check that user input is complete,correct,and plausible.
iii)meaningful data selection.
iv)central authorization checks for database accesses.
v)good read access performance while retaining the hierarchical data view determined by the application logic.
disadvantages:-
i)If you donot specify a logical database in the program attributes,the GET events never occur.
ii)There is no ENDGET command,so the code block associated with an event ends with the next event
statement (such as another GET or an END-OF-SELECTION).
1. transaction code SLDB.
2.enter name z<ldb-name>
3.create
4.short text
5.create
6. name of root node (here Ekko)
7. enter short text (f6)
8.node type -> data base table.
9.create
10 change logical DB
riht click on ekko and insert node
here node name ekpo
11.create
12. click on selections
13. press no Should the changed structure of Z<ldb name> be saved first.
14.select tables which you want to join.
15.transfer
16 now you have to o to coding part.
17. save
activate.
19.click to src code
double click on first include and activate
Regards
Vasu -
Use of Logical database in ABAP Queries
hi,
Can anybody tell me when/why do we use logical database in Infosets for ABAP Query?
Regards,
Divyahi,
pros: -you need not to define so many own tables, fields and additional codings in your info set
cons: - performance in huge DB's
A.
Message was edited by: Andreas Mann -
hi experts,
i need standard LDB's related to the tables of sd, mm and fi... can anyone help regarding this.....Ok so here you are, If you want to edit one go to SE36
LDB name
Logical database short text
50V
Delivery in process
AAV
Logical Database RV: Sales Documents
ABCLAIMLDB
Agency Business: Complaints Processing
ABS
ABAP Book: Customer and bookings
ACAC_ACE_LDBDS
Accrual Object Distribution Server Reporting Table
ACAC_ACE_LDBPS
Accrual Engine Posting Server Reporting Database
ACE_FILA_LDBDS
Accrual Object Distribution Server Reporting Table
ACE_FILA_LDBPS
Accrual Engine Posting Server Reporting Database
ACE_SOP_LDBDS
Stock Option Accounting Distribution Server LDB
ACE_SOP_LDBPS
Provisions for Awards: Posting Server LDB
ACEDS_003
Accrual Object Distribution Server Reporting Table
ACEPS_003
Accrual Engine Posting Server Reporting Database
ADA
Assets Database
AFI
Logical database for orders
AGENCYLDB
Agency Business: Logical Database
AKV
Logical Database RV: Sales Documents
ALV
Archiving Deliveries
ARV
Logical Database RV: Sales Documents
ASV
Request Screen for Summary Information
AUK
Settlement documents
AUW
Allocation Table
B1L
Transfer requirements by number
BAF
BAV-Data collector
BAM
Purchase Requisitions (General)
BANK
Logical Database for Table BNKA
BBM
Archiving of Purchase Requisitions
BC405_DIFF_NODES
Example of Different Node Types
BJF
Loans flow records with date restriction(YR
BKK
Base Planning Object
BKM
Purchase Requisitions per Account Assignment
BMM
Documents for Number
BPF
Treasury Business Partner
BRF
Document Database
BRM
Accounting Documents
BTF
Loan portfolios and flows
BTM
Process Order; Print
BUCHUNGSJOURNAL
LDB for Posting Journal
BUD
LDB For Loans Master Data, Conditions, Documents
C1F
Cash Budget Management
CCLDB_AENR
ECH: Change number with status information
CDC
Document structure
CEC
Equipment BOM
CEK
Cost Centers - Line Items
CFK
Data pool for SAP EIS
CIK
Cost Centers - Actual Data
CKA
Costing
CKC
Sales order BOM
CKM
Material master
CKQ
Material Selection for New Costing Solution
CKS
MiniApp. for the Calculator: Sales Order Data
CKS_WAO
MiniApp: Sales Order Items to be Processed
CKW
Costing run: Material Selection
CMC
Material BOM
CPK
Cost Centers - Plan Data
CRC
Work Centers
CRK
Cost Centers - Total
CRZ
Logical database for courses BC220/BC230
CSC
Standard BOM
CSR
Logical database for archiving BOMs
CTC
Functional location BOM
DBM
MRP Documents
DDF
CUSTOMER DATABASE
DPM
Planned Orders
DSF
Loan Debit Position
DVS
Logical database for archiving DMS data
DWF
Loan resubmission
EBM
Purchasing Activities per Requirement Tracking No.
ECM
Purchasing Documents per Material Class
EHS_OH001
Logical Database for Occupational Health
EKM
Purchasing Documents per Account Assignment
ELM
Purchasing Documents per Vendor
EMM
Purchasing Documents for Material
ENM
Purchasing Documents per Document Number
EQI
Logical Database (Equipment)
ERM
Archiving of Purchasing Documents
ESM
Purchasing Documents per Collective Number
EWM
Purchasing Documents per Supplying Plant
F1S
BC: Planned flights, flights and bookings
FDF
Cash management and forecast
FDK
IS-U/FERC: Drill down to line items and paths
FEF
Cash Management - Memo Records
FILA
Lease Accounting
FMF
Funds Management
FPMF
LDB, reads FPAYH and FPAYP
FRF
Drill-down Selection Screen
FSF
Cash Management Totals Records
FTI_BW_CFM_VALUES
Market Values and Simulated Values in Pos. Mgmt
FTI_LO_PERIODS
Loan/CML Period Evaluations
FTI_LO_POSITIONS
Loan /CML Positions
FTI_SWAP_POSITION
Swap Positions
FTI_TR_CASH_FLOWS
Treasury Payment Information
FTI_TR_PERIODS
Treasury: Period-Based Evaluations
FTI_TR_PL_CF
Treasury: Revenue and Cash Flow Reporting
FTI_TR_POSITIONS
Treasury Positions
FTLM_DB01
Limit Management
FUK
IS-U/FERC: Drill back from document line items
G1S
text
GLG
FI-SL Totals and Line Items
GLU3
Flexible G/L
I1L
Inventory data for storage bin
I2L
Warehouse quants for storage bin
I3L
Inventory documents
IBF
Real Estate Logical Database (Lease-Out)
IDF
Real Estate Logical Database
IDFPLUS
Real Estate Plus Logical Database
IFM
Purchasing Info Records: General
ILM
Archiving Purchasing Info Records
IMA
Logical database for investment programs
IMC
IM Summarization (not usable operationally)
IMM
Inventory documents for material
IMR
Approp. requests (not operationally functional)
IMT
Approp. requests (not operationally functional)
INM
Inventory documents
IOC
Shop floor control - order info system
IPM_ACE_LDBDS
Accrual Object Distribution Server Reporting Table
IPM_ACE_LDBPS
Accrual Engine Posting Server Reporting Database
IRM
Reorganization of inventory documents
J5F
Logical Database for new Nota Fiscal Database
K1V
Generating Conditions
KDF
Vendor Database
KIV
Customer Material Information
KKF
Balance Audit Trail of Open Items
KLF
Historical Balance Audit Trail
KMV
SD Documents for Credit Limit
KOV
Selection of Condition Records
L1L
Evaluation Whse Documents
L1M
Stock movements for material
LMM
Stock Movements for Material
LNM
Stock movements
LO_CHANGE_MNMT
Logical database for engineering change management
MAF
Dataset for Dunning Notices
MDF
Logical Database for Master Data Selection
MEPOLDB
Logical Database/Selection of Purch. Order Tables
MIV
BC: Planned flights, flights and bookings
MMIMRKPFRESB
Selection from Reservations
MRM
Reorganization of material documents
MSM
Material master
NOTIF
LDB for Basic Notifications
NOTIFICATIONS
NTI
Logical database object networking
ODC
Shop floor control - orders per MRP controller
ODK
Orders
OFC
Shop floor control - orders per prod.scheduler
OHC
Shop floor control - orders by numbers
OPC
Shop floor control - orders by material
PAK
CO-PA Segment Level and Line Items
PAP
Applicant master data
PCH
Personnel Planning
PGQ
QM: Specs and Results of the Quality Inspection
PMI
Structure database (plant maintenance)
PNI
PM Planning Database
PNM
Planning database
PNM_OLD
Planning Database
PNP
HR Master Data
PNPCE
HR Master Data (Incl. Concurrent Employment)
POH
Production orders database - header
PSJ
Project system
PTRVP
Travel Management
PYF
Database for Payment Medium Print Programs
QAM
Inspection Catalogs: Selected Sets
QAQ
Inspection Catalogs: Selected Sets
QCM
Inspection Catalogs: Codes
QCQ
Inspection Catalogs: Codes
QMI
Logical database (PM notifications)
QMQ
Inspection Characteristics
QNQ
Quality Notifications
QTQ
Logical database for inspection methods
QUERYTESTLDB
Test LDB for InfoSet Query
R0L
Archive selection: Transfer orders (MM-WM)
R1L
Archive selection: Transfer requirements (MM-WM)
R2L
Archive Selection: Posting Change Notices (MM-WM)
R3L
Archive selection: Inventory documents (MM-WM)
R4L
Archive selection: Inventory histories (MM-WM)
RBL
Archiving of transfer requests
REAO
Real Estate: Logical Database for Architecture
REBD
Logical Database for Real Estate Objects
REBP
Logical Database via Partner (Real Estate)
RECN
Real Estate: Selection by Contracts
RECONTRACT
RE Logical Database: (General) Contract
RHL
Archiving of inventory history
RIL
Archiving of inventory documents
RKM
Reservations for Account Assignment
RLI
Logical Database Reference Location
RMM
Reservations for material
RNM
Reservations
RTL
Archiving of transfer orders
RUL
Archiving of Posting Change Notices
S1L
Stock by storage bins
S1L_OLD
Stock by Storage Bins
S2L
Warehouse quant for material
S3L
Stocks
SAK
Completely Reversed Allocation Documents
SD_KUSTA
Logical Database for Sales Summary
SD_ORDER
Logical database for inquiries, contracts
SD_SALES_DOCUMENT
Logical database for inquiries, contracts
SDF
G/L Account Database
SMI
Serial Number Management
T1L
Transfer orders by number
T1L_OLD
Transfer Orders by Number
T2L
Transfer orders for material
T3L
Transfer orders for storage type
T4L
Transfer order for TO printing
T5L
Transfer orders for reference number
TAF
Treasury
TIF
Treasury Information System
TPI
Functional Location Logical Database
U1S
User master reorganization: Password changes
U2S
User master reorganization: Password changes
U3S
User master reorganization: Password changes
U4S
User master reorganization: Password changes
UKM_BUPA
SAP Credit Management: Business Partner
V12L
Pricing Report
VAV
Logical Database RV: Sales Documents
VC1
List of Sales Activities
VC2
Generate Address List
VDF
Customer Database with View of Document Index
VFV
Logical Database RV: Billing Documents
VLV
Logical Database For Deliveries
VVAV
Logical Database RV: Sales Documents
VXV
SD: Billing Document - Export
WAF
Securities position plus additional master data
WOI
Maintenance Item
WPI
Maintenance plans
WTF
Securities positions and flows
WTY
WTY LD
WUF
Sec.-Determ.master data for positions
I hope this will delh -
Logical Database - PNP, PCH, PNPCE
Hi Experts,
Im New to ABAP HR,
I would like to know about the logical databases we are using .
Logical Database - PNP, PCH, PNPCE, basic principles
If any body cud let me know about the differences , requiremnts , associated with these Logical databses will be much helpful for me.
Thanks
Rohini Devi
[email protected]Hi Rohini...
Global Employee Programming
Thanks
Message was edited by:
Aslam Riaz -
ABAP Report Program Logical Database PNP
I have a ABAP program using the logical database PNP. The report is config to run on MSS using EP. I have added code to capture the Org Unit when it is pass to the program from MSS. My issue is how do i capture the org unit value that is passed to the program. I have added code to capture field pnporgeh in the START OF SELECTION event. This works great if you are running the program from R3, but none of my edit checking against field pnporgeh works.
Hi John,
I am also having same trouble where in i have added a new custom(Z) report in the MSS ->My Staff -> Reporting under report category -> Time Management (MSS). I am not able to find how the value of org unit which is selected on portal screen is passed to report in R/3 which is using PNP logical db.
I tested in debugging but selection screen parameter PNPORGEH contains nothing.
Many Thanks in advance for the help.
Edited by: Ankit Kashyap on Nov 17, 2010 12:40 PM -
Hi All, I am quite familiar with Logical Databases but I need to understand the following.
1) I am using LDB ADA, but I want to use my own Selection Screen and not the default one that the LDB provides. I know I must put something in AT SELECTION-SCREEN but am unsure what.
2) Once I get the data, I want to store the data in an internal table - how do I go about doing this? If you can provide a code example that would be great.
Points for any relevant help.Hi,
A logical database is a special ABAP/4 program which combines the contents of certain database tables. You can link a logical database to an ABAP/4 report program as an attribute. The logical database then supplies the report program with a set of hierarchically structured table lines which can be taken from different database tables.
Logical database structures
There are three defining entities in an SAP logical database. You must be clear on all three in order to create and use one.
Table structure: Your logical database includes data from specified tables in SAP. There is a hierarchy among these tables defined by their foreign keys (all known to SAP), and you are going to define a customized relationship between select tables. This structure is unique and must be defined and saved.
Data selection: You may not want or need every item in the referenced tables that contributes to your customized database. There is a selection screen that permits you to pick and choose.
Database access programming: Once youve defined your logical database, SAP will generate the access subroutines needed to pull the data in the way you want it pulled.
Creating your own logical database
Heres a step-by-step guide:
1) Call up transaction SLDB (or transaction SE36). The path you want is Tools | ABAP Workbench | Development | Programming Environment | Logical Databases. This screen is called Logical Database Builder.
2) Enter an appropriate name in the logical database name field. You have three options on this screen: Create, Display, and Change. Choose Create.
3) Youll be prompted for a short text description of your new logical database. Enter one. Youll then be prompted to specify a development class.
4) Specify a root node, or a parent table, as the basis of your logical database structure. You can now place subsequent tables under the root table as needed to assemble the data object you want. You can access this tree from this point forward, to add additional tables, by selecting that root node and following the path Edit | Node | Create. Once youve saved the structure you define in this step, the system will generate the programming necessary to access your logical database. The best part is you dont have to write a single line of code.
Noted point is we cant add any selection criteria thru our se38 program if you are attaching any LDB to program.Ist of no use.
If you want to change selection criteria to the existing LDB, you have to goto SE36 tcode and provide LDB name and choose "Change" mode by selecting "Selections" Radio button.
declaration of params is different compared to normal se38 program in some aspects.
PARAMETERS :p_curr LIKE bkpf-waers FOR TABLE bkpf OBLIGATORY.
this BKPF table should be one of the node in the "Structure" Radio button.
Thanks
Sivaparvathi
Please reward points if helpful. -
Logical Database o/p in ALV
Dear Expert.
I have to call AFI logical database in ZPROGRAM. If I write GET DIAUFK (root node)
How do I fetch data form parent and child node?
O/p should come as ALV on that alv pop-up will come on that pop up list of transaction displayed which will work on click.
Please suggest.
START-OF-SELECTION.
GET DIAUFK .
*get late
*GET DIIHPA.
GET DIIFLO .
*GET DIQMEL.
MOVE-CORRESPONDING DIAUFK TO ITAB.
*MOVE-CORRESPONDING DIQMEL TO ITAB.
APPEND ITAB.
GET DIAUFK LATE.
IF S_ERDAT NE SPACE AND S_WERKS NE SPACE.
ITAB-ERDAT = S_ERDAT .
ITAB-WERKS = S_WERKS .
ENDIF.
END-OF-SELECTION.
LOOP AT ITAB.
IT_FINAL = ITAB.
APPEND IT_FINAL.
ENDLOOP.Try exploring FM 'LDB_PROCESS'
<removed by moderator>
Edited by: Thomas Zloch on Aug 9, 2010 2:56 PM - don't ask for ... -
How to hide some select-option of Logical Database in report?
How to hide select-option of Logical Database in report?eg . In Logical Database 'PNP' , my code is 'GET PERNR' , excute the report , select-screen is displayed . I want to hide some select-options , such as PNPPERNR-LOW .
Edited by: rongrong wang on Mar 26, 2008 9:31 AMU need to write code in initialization as
initialization.
loop at screen.
if screen-name = 'PNPPERNR-LOW'.
screen-active = '0'.
modify screen.
endif.
if screen-name = 'PNPPERNR-HIGH'.
screen-active = '0'.
modify screen.
endif.
endloop. -
Steps to create LOGICAL DATABASE in sap
hi guys,
i have gone through many documents about LDB. But, i didnt get the steps to create a LDB.
plz provide me with the steps to be followed to create a LDB.
thnx,
shivaa.Hi Shiva,
This might help you!
Logical database structures
There are three defining entities in an SAP logical database. You must be clear on all three in order to create and use one.
Table structure: Your logical database includes data from specified tables in SAP. There is a hierarchy among these tables defined by their foreign keys (all known to SAP), and you are going to define a customized relationship between select tables. This structure is unique and must be defined and saved.
Data selection: You may not want or need every item in the referenced tables that contributes to your customized database. There is a selection screen that permits you to pick and choose.
Database access programming: Once youu2019ve defined your logical database, SAP will generate the access subroutines needed to pull the data in the way you want it pulled.
Creating your own logical database
ABAP/4 (Advanced Business Application Programming language, version 4) is the language created by SAP for implementation and customization of its R/3 system. ABAP/4 comes loaded with many predefined logical databases that can construct and table just about any conventional business objects you might need in any canned SAP application. However, you can also create your own logical databases to construct any custom objects you care to define, as your application requires in ABAP/4. Hereu2019s a step-by-step guide:
1. Call up transaction SLDB (or transaction SE36). The path you want is Tools | ABAP Workbench | Development | Programming Environment | Logical Databases. This screen is called Logical Database Builder.
2. Enter an appropriate name in the logical database name field. You have three options on this screen: Create, Display, and Change. Choose Create.
3. Youu2019ll be prompted for a short text description of your new logical database. Enter one. Youu2019ll then be prompted to specify a development class.
4. Now comes the fun part! You must specify a root node, or a parent table, as the basis of your logical database structure. You can now place subsequent tables under the root table as needed to assemble the data object you want. You can access this tree from this point forward, to add additional tables, by selecting that root node and following the path Edit | Node | Create. Once youu2019ve saved the structure you define in this step, the system will generate the programming necessary to access your logical database. The best part is you donu2019t have to write a single line of code.
Watch out!
The use of very large tables will degrade the performance of a logical database, so be aware of that trade-off. Remember that some tables in SAP are very complex, so they will be problematic in any user-defined logical database.
Declaring a logical database
Hereu2019s another surprising feature of logical databases: You do not assign them in your ABAP/4 Code. Instead, the system requires that you specify logical databases as attributes. So when you are creating a report, have your logical database identifier (the name you gave it) on hand when you are defining its attributes on the Program Attributes screen. The Attributes section of the screen (the lower half) will include a Logical database field, where you can declare your logical database.
Logical databases for increasing efficiency
Why else would you want to create a logical database? Consider that the logical databases already available to you begin with a root node and proceed downward from there. If the data object you wish to construct consists of items that are all below the root node, you can use an existing logical database program to extract the data, then trim away what you donu2019t want using SELECT statementsu2014or you can increase the speed of the logical database program considerably by redefining the logical database for your object and starting with a table down in the chain. Either way, youu2019ll eliminate a great deal of overhead.
Reward if useful.
Thankyou,
Regards. -
Regarding Logical database and select statement..
Hi
Experts.
i would like to know the diff b/w logical data base & select statement while using report.
wt is the use of logical databases in R/3. is there any advantage used in the reports.
Thanks & Regards..
Spandana.Dear Spandana,
Go through the below description of LDB. I hope you wil get a fair amount of idea.
SAP comes loaded with all the extras. Among the extras that are most helpful to IT managers are all the access routines needed to pull any business object that managers can think of out of SAP databases. However, SAP has not thought of everything where your particular applications are concerned. SAP organizes its standard database tables to service business units based on conventional business applications. Itu2019s likely your business requires something new, perhaps even something exotic. In that case, you will need to create a new database, using information from different places. Basically, you need a logical database. You need to create a virtual business data object repository consisting of a new kind of record or table that suits your purposes. In addition, the repository should be composed of information that is actually stored in a number of different locations, none of them necessarily logically associated with one another. Letu2019s take a closer look at creating logical databases.
A case for a logical database
Suppose my company manufactures widgets of the most obscure variety, and they are components of other widgets. I sell my widgets as raw material for the more sophisticated widgets built by others, but in some cases I actually partner with other manufacturers in creating yet another class of widget. Now, in my world, I consequently have customers who are also partners. I sell to them and I partner with them in manufacturing and distribution. Also, I need an application that uses both of these dual-use relationships.
Essentially, I have a customer database and a partner database. Neither contains records that are structured to contain the identifying particulars of the other. Thus, I need a hybrid database that gives me tables detailing these hybrid relationships. What can I do? I can go the long way around and write a new database, pulling information from both and creating new objects with a customized program that I write by hand. However, this process is cumbersome and contains maintenance issues. On the other hand, I can use SAPu2019s logical database facility, create my logical database in a couple of minutes, and have no maintenance issues at all.
Logical database structures
There are three defining entities in an SAP logical database. You must be clear on all three in order to create and use one.
u2022 Table structure: Your logical database includes data from specified tables in SAP. There is a hierarchy among these tables defined by their foreign keys (all known to SAP), and you are going to define a customized relationship between select tables. This structure is unique and must be defined and saved.
u2022 Data selection: You may not want or need every item in the referenced tables that contributes to your customized database. There is a selection screen that permits you to pick and choose.
u2022 Database access programming: Once youu2019ve defined your logical database, SAP will generate the access subroutines needed to pull the data in the way you want it pulled.
Creating your own logical database
ABAP/4 (Advanced Business Application Programming language, version 4) is the language created by SAP for implementation and customization of its R/3 system. ABAP/4 comes loaded with many predefined logical databases that can construct and table just about any conventional business objects you might need in any canned SAP application. However, you can also create your own logical databases to construct any custom objects you care to define, as your application requires in ABAP/4. Hereu2019s a step-by-step guide:
1. Call up transaction SLDB (or transaction SE36). The path you want is Tools | ABAP Workbench | Development | Programming Environment | Logical Databases. This screen is called Logical Database Builder.
2. Enter an appropriate name in the logical database name field. You have three options on this screen: Create, Display, and Change. Choose Create.
3. Youu2019ll be prompted for a short text description of your new logical database. Enter one. Youu2019ll then be prompted to specify a development class.
4. Now comes the fun part! You must specify a root node, or a parent table, as the basis of your logical database structure. You can now place subsequent tables under the root table as needed to assemble the data object you want. You can access this tree from this point forward, to add additional tables, by selecting that root node and following the path Edit | Node | Create. Once youu2019ve saved the structure you define in this step, the system will generate the programming necessary to access your logical database. The best part is you donu2019t have to write a single line of code.
Watch out!
The use of very large tables will degrade the performance of a logical database, so be aware of that trade-off. Remember that some tables in SAP are very complex, so they will be problematic in any user-defined logical database.
Declaring a logical database
Hereu2019s another surprising feature of logical databases: You do not assign them in your ABAP/4 Code. Instead, the system requires that you specify logical databases as attributes. So when you are creating a report, have your logical database identifier (the name you gave it) on hand when you are defining its attributes on the Program Attributes screen. The Attributes section of the screen (the lower half) will include a Logical database field, where you can declare your logical database.
Logical databases for increasing efficiency
Why else would you want to create a logical database? Consider that the logical databases already available to you begin with a root node and proceed downward from there. If the data object you wish to construct consists of items that are all below the root node, you can use an existing logical database program to extract the data, then trim away what you donu2019t want using SELECT statementsu2014or you can increase the speed of the logical database program considerably by redefining the logical database for your object and starting with a table down in the chain. Either way, youu2019ll eliminate a great deal of overhead.
Regards
Arindam -
Logical database PCH,Extended Object ID
When using logical database PCH.I found Object structure has a component REALO means extended object id.
Can somebody give a example to show the actual meaning of extended object id?
thanks.
Edited by: Lanmbor Yang on May 30, 2008 8:40 AMI answer to myself, FM HR_MACO provides the information I need.
Anyway thanks for the interest -
Logical database: S1L, problem?
Hi all,
We have standard logical database: S1L and we have warehouse number on selection screen as a parameter.
If i enter '**' on selection screen, then it should pick all the warehouse numbers from T300 table, but when i enter '*', then it is giving error as '**' is not valid entry in T300.
Can you help me in this regard.
Thanks in advance.Click on the 'Dynamic selections' button, and there you'll be able to specify multiple individual values for the warehouse number. If you want everything, you'll have to put all the existing warehouse numbers into the dynamic selection. Then save it as a variant, so that you don't have to type them in every time
<i>Edit: </i>Wait, that still might not work because it appears to be tied to the other selection fields... so the one single warehouse number will still probably restrict your selection. If that's the case, then the standard logical database won't work for your purpose, you'll have to copy and adapt it to your needs.
Message was edited by:
Tamas Hoznek -
Hi all,
I want to use my selections along with logical database selection screen in my program.when i am trying to use it its giving some errors.if there is a get event its not allowing to select my own selection.can any advise my how to do it.
Regards,
Lisa
Message was edited by: Lisa RoyHi Lisa,
Eeven I am using GET (pernr) in my scenario also.
see my below sample code
* S T A R T O F S E L E C T I O N
START-OF-SELECTION.
* Get pernr
GET pernr.
* To Get Employee Details
PERFORM get_data.
* E N D O F S E L E C T I O N
END-OF-SELECTION.
*& Form GET_DATA
* Form to get data
FORM GET_DATA.
* Get latest record from P0001 infotype
rp-provide-from-last p0001 space pn-begda pn-endda.
if pnp-sw-found = 1.
* Check positions
IF NOT s_plans IS INITIAL.
CHECK p0001-plans IN s_plans.
ENDIF.
* Check Org.Unit
IF NOT s_orgeh IS INITIAL.
CHECK p0001-orgeh IN s_orgeh.
ENDIF.
* Check Org.Structure
* CHECK p0001-orgeh IN pnpobjid.
rp-provide-from-last p0105 '0001' pn-begda pn-endda.
clear dg_flag.
* Form to get Activity Group
perform get_act_group using p0001-plans.
* Form to get profile info
perform get_info.
else.
exit.
endif.
ENDFORM. " GET_DATA
If you see my above code <b>s_palns</b> is the select-option and I am using in my program. It is working for me.
Can you post ur code or tell me which LDB u r using.
Thanks&Regards,
Siri.
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