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1 kwi 2011 · We use triggers to change the value of columns like .new:LAST_MODIFIED := sysdate and .new:LAST_MODIFIED_BY := user. That's it. Don't ever allow a TRIGGER to prevent a transaction from completing. Find another option.
23 sty 2024 · In PL/SQL, triggers are special stored procedures that automatically execute in response to specific events on a table or view. Among these, row-level triggers are particularly useful for enforcing business rules, maintaining data integrity, and automating tasks.
13 wrz 2024 · In PL/SQL, triggers are special stored procedures that automatically execute in response to specific events on a table or view. Among these, row-level triggers are particularly useful for enforcing business rules, maintaining data integrity, and automating tasks.
20 lis 2024 · In the PL SQL Transactions tutorial of the PL/SQL series, we have learned about COMMIT, ROLLBACK, and SAVEPOINTS statements. In this article, we will explore triggers in PL SQL and their advantages, types, and usage.
21 paź 2024 · In this article, we will cover PL/SQL Statement level Triggers syntax, their importance, characteristics, common use cases, and examples, illustrating their role in Oracle database management.
This tutorial shows how to use the CREATE TRIGGER statement to create a trigger, EVAL_CHANGE_TRIGGER, which adds a row to the table EVALUATIONS_LOG whenever an INSERT, UPDATE, or DELETE statement changes the EVALUATIONS table.
A trigger is a named PL/SQL block stored in the Oracle Database and executed automatically when a triggering event takes place. The event can be any of the following: A data manipulation language (DML) statement executed against a table e.g., INSERT , UPDATE , or DELETE .
