Difference between revisions of "ONROLLBACK Table Constraint"
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Revision as of 17:24, 8 December 2009
Purpose
Table constraint activated when a forms based operation is abandoned
Syntax
ONROLLBACK <procedure>
See Also
ALTER TABLE, CONSTRAINTS, CREATE TABLE
Description
A constraint is used to define rules that help to provide data integrity. TABLE constraints apply to table-based operations. You must have ALTER privilege on the table. The table will be locked for EXCLUSIVE use during the operation.
The ONROLLBACK table constraint is activated when a forms based operation is abandoned. The <procedure> specified must be a character expression evaluating to a procedure name. If no file extension is included, '.prg' is assumed. The specified procedure is run when the user presses the [ABANDON] key.
Example
ALTER TABLE customer modify ONROLLBACK "p_rollback";
Products
Recital, Recital Server
