SAP Fundamentals

Types of tables in SAP

Posted in SAP Fundamentals on July 21st, 2010 by admin

There are four types of tables in SAP. Tables containing system control data These tables fulfill technical control functions within the SAP system.  They are maintained either by SAP or by users with special authorization. Tables containing basic commercial data These tables contain data such as postal codes, country keys, and wage types and are […]

SAP lock mechanism details

Posted in SAP Fundamentals on July 20th, 2010 by admin

The SAP System is equipped with a special lock mechanism that synchronizes access to data on the database. The purpose of the lock mechanism is to prevent two transactions from changing the same data on the database simultaneously.Locks are defined generically as “lock objects” in the Data Dictionary. A lock request is a specific instance […]

Difference between Database LUW and SAP LUW

Posted in SAP Fundamentals on June 30th, 2010 by admin

In the case of the database, an LUW is a sequence of data operations that cannot be divided up. The operations are either carried out in full or not at all. Database LUWs are modules which go to make up the database procedures for consistent data processing. An R/3 transaction can include several database LUWs […]

Classification System to classify all types of object in SAP

Posted in SAP Fundamentals, SAP IMPLEMENTATION GUIDE ( IMG ) on May 29th, 2010 by admin

The classification system allows you to use characteristics to describe all types of objects, and to group similar objects in classes – to classify objects, in other words, so that you can find them more easily later. You then use the classes to help you to find objects more easily, using the characteristics defined in […]

Namespaces and Naming Conventions in SAP

Posted in SAP Fundamentals on May 6th, 2010 by admin

SAP has reserved name ranges for customer objects and SAP objects. Use these customer name ranges to make sure that your objects are not overwritten by SAP objects during the import of corrections or an upgrade.This Namespaces and Naming Conventions in SAP pdf tutorial  lists the customer name ranges for the different system objects. Contents […]