Oracle Forms Developer – Form Builder Reference, Volume 1

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New-Item-Instance trigger.
When-New-Item-Instance Perform an action immediately after the input focus
moves to a different item. If the new item is in a
different block, fires after the When-New-Block-
Instance trigger.
Query-time triggers
Query-time triggers fire just before and just after the operator or the application executes a query in a
block.
trigger Typical Usage
Pre-Query Validate the current query criteria or provide additional
query criteria programmatically, just before sending the
SELECT statement to the database.
Post-Query Perform an action after fetching a record, such as looking
up values in other tables based on a value in the current
record. Fires once for each record fetched into the block.
Transactional triggers
Transactional triggers fire in response to a wide variety of events that occur as a form interacts with the
data source.
trigger Typical Usage
On-Delete Replace the default Form Builder processing for
handling deleted records during transaction posting.
On-Insert Replace the default Form Builder processing for
handling inserted records during transaction posting.
On-Lock Replace the default Form Builder processing for
locking rows in the database.
On-Logon Replace the default Form Builder processing for
connecting to ORACLE, especially for a form that
does not require a database connection or for
connecting to a non-ORACLE data source.
On-Logout Replace the default Form Builder processing for
logout from ORACLE.
On-Update Replace the default Form Builder processing for
handling updated records during transaction posting.