Hierarchy
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DWB-DIC-AC (Application Component) Activation Program, Conversion Program, DB Utility, MC, SPDD⤷
SDIC (Package) ABAP Dictionary
Basic Data
| Data Element | CLASSTAB |
| Short Description | Object class for tables |
Data Type
| Category of Dictionary Type | D | Domain |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | DYNPCHOICE | |
| Data Type | CHAR | Character String |
| Length | 1 | |
| Decimal Places | 0 | |
| Output Length | 1 | |
| Value Table |
Further Characteristics
| Search Help: Name | ||
| Search Help: Parameters | ||
| Parameter ID | ||
| Default Component name | ||
| Change document | ||
| No Input History | ||
| Basic direction is set to LTR | ||
| No BIDI Filtering |
Field Label
| Length | Field Label | |
| Short | 10 | Tables |
| Medium | 18 | Tables |
| Long | 18 | Tables |
| Heading | 10 | Tables |
Documentation
Definition
Database table
Tables can be defined independently of the database in the ABAP Dictionary. The fields of the table are defined together with their (database-independent) data types and lengths.
A table definition in the ABAP Dictionary has the following components:
- Table fields: The field names and the data types of the fields contained in the table are defined here.
- Foreign keys: The foreign keys define the relationships between this table and other tables.
- Technical settings: The technical settings define how the table is created on the database.
- Indexes: Indexes can be defined for the table to speed up data selection from the table.
There are three categories of database tables in the ABAP Dictionary.
A physical table definition is created in the database for the table definition stored in the ABAP Dictionary for transparent tables when the table is activated. The table definition is translated from the ABAP Dictionary to a definition of the particular database.
On the other hand, pooled tables and cluster tables are not created in the database. The data of these tables is stored in the corresponding table pool or table cluster. It is not necessary to create indexes and technical settings for pooled and cluster tables.
Supplementary Documentation - CLASSTAB 0001
Use
You can maintain the assignment of tables to Dictionary authorization groups.
This allows you to restrict authorization for Dictionary maintenance of individual tables to a specific group of users/developers.
Procedure
- Mark with a cross, select object from the menu or press PF2.
- Generic entry of the object name and/or authorization group.
- Select PF key maintenance.
- Enter the authorization group in the relevant field.
- Save and press PF3 Back.
- Check authorization by carrying out a maintenance test.
Dependencies
You require authorization to maintain the associated tables TDDAx. If you do not have this authorization, the system branches automatically to display mode. There is also a lock function that prevents parallel assignment of authorization classes and Dictionary maintenance of the same objects. If this function is in place, only display mode is possible.
You can only enter allowed authorization groups. These are maintained under menu point Permitted_groups.
Examples
Supplementary Documentation - CLASSTABU 0001
Procedure
- Mark with a cross, select object from the menu or press PF2.
- Generic entry of the object name and/or authorization group.
- Select PF key maintenance.
- Enter the authorization group in the relevant field.
- Save and press PF3 Back.
- Check authorization by carrying out a maintenance test.
Dependencies
You require authorization to maintain the associated tables TDDAx. If you do not have this authorization, the system branches automatically to display mode. There is also a lock function that prevents parallel assignment of authorization classes and Dictionary maintenance of the same objects. If this function is in place, only display mode is possible.
You can only enter allowed authorization groups. These are maintained under menu point Permitted_groups.
Examples
History
| Last changed by/on | SAP | 19950209 |
| SAP Release Created in |
