Description
Read Only specifies whether PowerBuilder should update the extended attribute system tables and any other tables in your database. The extended attribute system tables (also known as the extended catalog) consist of five tables that contain default extended attribute information for your database.
The Read Only setting determines whether you can modify (update) the tables in your database. By default, the Read Only check box is cleared in the Database Preferences dialog box. This means that PowerBuilder updates the extended attribute system tables and other tables in your database when you make changes.
If you select the Read Only check box, PowerBuilder does not update the extended attribute system tables or any other tables in your database. You cannot modify (update) information in the extended attribute system tables or any other database tables from the DataWindow painter when the Read Only check box is selected.
Applies to
All database interfaces
In an application
You cannot set the Read Only database preference in code.
In the development environment
In the Database painter, select or clear the Read Only check box in the Database Preferences dialog box as follows:
-
Select the check box
PowerBuilder does not update the extended attribute system tables or any other tables in your database. You cannot modify (update) information in the extended attribute system tables or any other database tables from the DataWindow painter when the Read Only check box is selected.
-
Clear the check box
(Default) PowerBuilder updates the extended attribute system tables and any other tables in your database when you modify them.
Default value
The Read Only check box in the Database Preferences dialog box is cleared by default.
Usage
If you select the Read Only check box in the Database Preferences dialog box, you cannot modify information in any tables from the DataWindow painter.
Therefore, you can use only:
-
SELECT and Retrieve statements in the DataWindow painter
-
SELECT statements in embedded SQL
See also
