What are the database triggers in Oracle?

What are the database triggers in Oracle?

A trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified event occurs. Note: The database can detect only system-defined events. You cannot define your own events.

What are database level triggers?

SQL Server DDL triggers are specifically used to control and review the changes taking place in the database. These triggers can be used to put the limit on the unauthorized clients to make DDL type of changes such as DROP VIEW, DROP PROCEDURE, DROP Function and so on using DDL Trigger.

What are types of triggers in Oracle?

There are 3 different types of event triggers, they are:

• DDL EVENT TRIGGER. It fires with the execution of every DDL statement(CREATE, ALTER, DROP, TRUNCATE).
• DML EVENT TRIGGER. It fires with the execution of every DML statement(INSERT, UPDATE, DELETE).
• DATABASE EVENT TRIGGER.

What is the difference between database triggers and form level triggers?

A database trigger can be fired from any session executing the triggering DML statements. While form trigger is specific to the form. Database triggers can cause other database triggers to fire. On the other hand, form triggers cannot cause other form triggers to fire.

What are the types of triggering?

What are the types of triggers?

• DDL Trigger.
• DML Trigger.
• Logon Trigger.

What are database triggers used for?

A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database.

What are the types of triggers?

What is row level and statement level trigger?

Row level triggers executes once for each and every row in the transaction. Statement level triggers executes only once for each single transaction.

How do database triggers work?