|ABAP Dictionary (BC-DWB-DIC)|
A central redundancy-free information repository for all application and system data in the SAP System.
The ABAP Dictionary describes the logical structure of application development objects such as tables, views and data types, as well as their representation in the structures of the underlying relational database. Data redundancy is eliminated because all runtime environment components such as application programs or the database interface get information about these objects directly from the ABAP Dictionary.
The ABAP Dictionary is an active data dictionary and is fully integrated in the ABAP Workbench.