Oracle Forms Developer – Form Builder Reference, Volume 1

On-Check-Unique trigger
Description
During a commit operation, the On-Check-Unique trigger fires when Form Builder normally checks that
primary key values are unique before inserting or updating a record in a base table. It fires once for each
record that has been inserted or updated.
Replaces the default processing for checking record uniqueness. When a block has the PRIMKEYB
property set to Yes, Form Builder, by default, checks the uniqueness of a record by constructing and
executing the appropriate SQL statement to select for rows that match the current record’s primary key
values. If a duplicate row is found, Form Builder displays message FRM-40600: Record has already
been inserted.
For a record that has been marked for insert, Form Builder always checks for unique primary key values.
In the case of an update, Form Builder checks for unique primary key values only if one or more items
that have the Primary Key item property have been modified.
Definition Level
form, block
Legal Commands
SELECT statements, PL/SQL, unrestricted built-ins
Enter Query Mode no
Usage Notes
To perform the default processing from this trigger, call the CHECK_RECORD_UNIQUENESS builtin.
On Failure
no effect
Fires In
Check Record Uniqueness
Post and Commit Transactions
See Process Flowcharts
434