Trigger | Varinder Sandhu

Oracle – PL-SQL – Trigger – After Insert OR Update OR Delete

Varinder Sandhu — Mon, 16 Jan 2012 12:47:53 +0000

We can create a trigger with multiple actions (i.e. Insert or Update or Delete) here sharing an example of trigger in which we can handle three actions as insert, update and delete. Example: CREATE OR REPLACE TRIGGER EMPLOYEE_AI_AU_AD AFTER INSERT OR UPDATE OR DELETE ON EMPLOYEE FOR EACH ROW DECLARE

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Oracle -PL-SQL-Trigger – Old and New Column Values

Varinder Sandhu — Mon, 02 Jan 2012 13:06:11 +0000

Within a trigger body of a row trigger, two correlation names exist for every column of the table being modified: one for the old column value, and one for the new column value. Depending on the type of triggering statement, certain correlation names might not have any meaning. A trigger

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Oracle – Types of the Triggers

Varinder Sandhu — Mon, 19 Dec 2011 11:33:20 +0000

There are four types of triggers: Table-level triggers can initiate activity before or after an INSERT, UPDATE, or DELETE event. View-level triggers define to the view. Database-level triggers can be activated at startup and shutdown of a database. Session-level triggers can be used to store specific information.

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Oracle – PL-SQL- Introduction of Triggers

Varinder Sandhu — Mon, 19 Dec 2011 11:28:26 +0000

A trigger is a procedure that is run automatically by the database when a specified SQL DML INSERT, UPDATE, or DELETE statement is run against a table or view. Triggers are similar to stored procedures. A trigger stored in the database can include SQL and PL/SQL statements to run as

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