ABAP Tutorials » DDIC

SAP renaming Field Names/Keywords using CMOD

Admin — Wed, 19 Oct 2011 05:14:04 +0000

SAP allows to modify its Keywords/Field names using the Customer Modification Transaction(CMOD).

To adjust/change any keyword or DDIC field name, navigate to CMOD and browse to the option Goto->Text Enhacements->Keywords->Change.

It will ask you for the field name you want to modify/enhance. Here specify the Field Name and the language in which you want to change to be made.

It will take you the screen where you can specify various type of texts for the field name enhacement. Change the text as desired and save. It will impact the keyword throughout SAP.

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ABAP Programs for Beginners

Admin — Fri, 07 May 2010 07:11:06 +0000

The code book contain the beginners level programs for new ABAPers. The book covers almost every basic aspect that a programer in this domain should know.

Some of the programs that the book covers are:

How to define types and data objects
A Few Simple Examples
Working with database tables and internal tables
Designing a report
Three approaches to define data objects
Complex Non-Elementary Types and Data Objects
Type-Specific Output Options
External flow of control (events)
Using internal tables as snapshots of database tables
Working with get events
Dynamic sort command with several sort criteria
Working with Field Symbols
Transferring data to a file
Reading data from a file

Download Link: ABAP Code Book

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Making Table Data Transportable in SAP

Admin — Fri, 16 Apr 2010 06:53:03 +0000

Some clients wants data in the table to be maintained directly onto Live server whereas some wants is to be transportable across systems/landscape for maintaining data consistancy.

Table Maintenance Generator is used for this. The process can be applied to directly to the table or by using view.

Steps:

1. Go to the table/view and select SE11 —> utilities —> Table Maintenance Generator.

2. In this screen for the section “Dialog data transport Details” the
“Standard Recording Routine” option should be selected.

Then only will the system ask for Transport requsest when entering data using view in SM30. Otherwise, selecting No will make data nontransportable, thus you have to maintain data on each system individually.

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Complete Reference to ABAP Basics

Admin — Tue, 16 Mar 2010 18:16:32 +0000

The following ebook is for the ABAP beginners giving an overview of basic topics in ABAP.

This reference guide focuses on following topics:

ENTERPRISE RESOURCE PLANNING (ERP)
SAP ADVANTAGES
Role of ABAPer
R/3 ARCHITECTURE COMPONENTS
WHAT IS CLIENT IN SAP
Developemt Obects - REPOSITORY OBJECTS and DATA DICTIONARY OBJECTS
ABAP GUI
DATA DICTIONARY
INTERNAL TABLES
SUBROUTINES
Reports
MODULE POOL PROGRAMMING
Menu Painter
BATCH DATA COMMUNICATION
LSMW ( Legacy System Migration Workbench)
SAPSCRIPTS
SMARTFORMS

Link : Complete Reference to ABAP Basics

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Logical Database in SAP – a must for ABAP HR programmer

Admin — Thu, 19 Nov 2009 12:15:43 +0000

The Logical Database is special type of ABAP program that combines the contents of certain related database tables and retrieve some related data and make it available to application programs.

In other words, a LDB is a method by which ABAP programs read and process the data. The sequence in which the data is supplied to the program is determined by a tree structure.

The LDB usually consists of the following components:

Structure
Selections
Database programs

Logical databases have a tree structure.A logical database can contain a maximum of 300 tables.

For example: SAPDBPNP is the name of the database program for the logical database PNP.

How are logical database used:

1.Logical databases when generating an ABAP program

The selection screen generated contains the selections (SELECT-OPTIONS AND PARAMETERS) of both the logical database and the program.

The only database-specific selections displayed on the selection screen are those needed by the program for data retrieval purposes.

2. Logical databases at run-time of an ABAP program

At run-time, the system processes the events in the program and in the logical database in the following order:

Before displaying the selection screen, certain initializations (e.g. calculating default values such as key date, etc.) are performed for the selection screen by the logical database and the program. The selection screen is displayed and the user enters data in the input fields.

The logical database and the program check that the input is correct and complete, but also that the user has the appropriate authorizations. If an error occurs, some fields are made ready for input again, so that the user can make the necessary correction(s).

In the event START-OF-SELECTION, the ABAP program performs any preliminary work (for example, importing files).

The logical database reads the selected data and the program processes it within the GET events according to the sequence specified by the structure.

In the event END-OF-SELECTION, the ABAP program performs any concluding operations (for example, calculating totals, exporting files).

3 . Designing the selection screens
The standard selection screen of a logical database has a standard layout where SELECT-OPTIONS and PARAMETERS appear in the sequence they are declared, each on a new line. The system automatically generates such a screen for each program that does not have its own selection screen entered in the attributes. You can define your own selection screens for any logical database . If the attributes of a program include the number of its own selection screen, the system uses this screen as a model when generating. Any program-specific selections appear after the database selections. The flow logic for such screens is also generated automatically and therefore cannot be modified. You cannot delete database selections.

Functions of LDB:

Data retrieval :

The personnel data of each employee is loaded into the main memory where it can be accessed for processing.

Screening :

Employees can be selected according to the organizational criteria entered on the selection screen.

E.g…Hourly wage earners in a particular personnel sub area.

               There are two types of screening..Person selection and data selection period. Person selection defines those employees for whom a report is to be run.    E.g..Monthly wage earners in a specific personnel sub-area.
             E.g..Personnel number range
             E.g..Features of org.Assignment…Employees who assigned to certain cost center.
              E.g..Employee status..Active or inactive.

The data selection period delimits the time period for which data is evaluated. When you enter the data selection period,the provide loop retrieves the infotype records whose validity period overlaps with at least one day of this period.

Authorization check:

This ensures that the person starting the evaluation Is authorized to access the report data.

Some Logical Databases in ABAP HR: PNP, PNPCE, PAP, PCH.

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