Oracle triggers when updating Sexchat247
For Example: The price of a product changes constantly.It is important to maintain the history of the prices of the products.
However, we need to run a second test to ensure that the correct number of rows have been updated.
4)If you ROLLBACK the transaction before committing to the database, the data inserted to the table is also rolled back.
There are two types of triggers based on the which level it is triggered.
A trigger is a pl/sql block structure which is fired when a DML statements like Insert, Delete, Update is executed on a database table.
A trigger is triggered automatically when an associated DML statement is executed.
The following hierarchy is followed when a trigger is fired. 2) Next BEFORE row level trigger fires, once for each row affected.