ABAP DATA DICTIONARY

The ABAP Dictionary centrally describes and manages all the data definitions used in the system, where we can define and maintain the objects which are related to database. Here we can create, update, delete the objects which are related to data base. SE11 is the TCODE for data dictionary. It is a utility for defining data objects.

The most important object types in the ABAP Dictionary are :-

1. Data Base tables
2. Views
3. Data Types (Data Elements, Structures, Table Types)
4. Type Group
5. Domains
6. Search helps
7. Lock objects

Purpose

1. Data definitions (metadata) are created and managed in the ABAP Dictionary.
2. The ABAP Dictionary permits a central description of all the data used in the system without redundancies.
3. New or modified information is automatically provided for all the system components.
4. This ensures data integrity, data consistency and data security.