ABAP Data Dictionary

ABAP Data Dictionary

Tcode: SE11

-> The ABAP Dictionary centrally describes and manages all the data definitions used in the
system.
-> The ABAP Dictionary is completely integrated in the ABAP Development Workbench.
All the other components of the Workbench can actively access the definitions stored in the ABAP
Dictionary.
-> The ABAP Dictionary supports the definition of user-defined types (data elements, structures and
table types). You can also define the structure of database objects (tables, indexes and views) in
the ABAP Dictionary. These objects can then be automatically created in the database with this
definition.
-> The ABAP Dictionary also provides tools for editing screen fields, for example for
assigning a field an input help (F4 help).
The most important object types in ABAP Dictionary are:
-> Tables
-> Views
-> Types (Data Elements,Structures,Table Types)
-> Domains
-> Search Helps
-> Lock Objects

Data definitions (metadata) are created and managed in the ABAP Dictionary. The ABAP
Dictionary permits a central description of all the data used in the system without redundancies.
New or modified information is automatically provided for all the system components. This
ensures data integrity, data consistency and data security.
You can create the corresponding objects (tables or views) in the underlying relational database
using these data definitions. The ABAP Dictionary therefore describes the logical structure of the
objects used in application development and shows how they are mapped to the underlying
relational database in tables or views.
The ABAP Dictionary also provides standard functions for editing fields on the screen, for
example for assigning a screen field an input help.