hi,
The ABAP Dictionary permits a central management of all the data definitions used in the R/3 System.
In the ABAP Dictionary you can create user-defined types (data elements, structures and table types) for
use in ABAP programs or in interfaces of function modules. Database objects such as tables and
database views can also be defined in the ABAP Dictionary and created with this definition in the
database.
The ABAP Dictionary also provides a number of services that support program development. For
example, setting and releasing locks, defining an input help (F4 help) and attaching a field help (F1 help)
to a screen field are supported
Tables and database views can be defined in the ABAP Dictionary.
These objects are created in the underlying database with this definition. Changes in the definition of a
table or database view are also automatically made in the database.
Indexes can be defined in the ABAP Dictionary to speed up access to data in a table. These indexes are
also created in the database.
There are three different type categories in the ABAP Dictionary:
Data elements: Describe an elementary type by defining the data type, length and possibly decimal
places.
Structures: Consist of components that can have any type.
Table types: Describe the structure of an internal table.
They both are one and same thing.
All repository objects are stored in the database table TADIR. The first two fields of the key define the type of object that it is e.g.
A program is R3TR and PROG.
the objects created via abap work bench (in r/3 database) are called repository objects.
Ex: programs, authorization objects, lock objects, Customizing objects, and so on.
i.e these objects are global in nature.
we will create these objects using Object navigator (transaction se80).
Hope this helps, Do reward.
Edited by: Runal Singh on Apr 3, 2008 12:54 PM
Bluesky
