Logon triggers fire in response to the LOGON event that is raised when a user sessions is being established.
Triggers can be created directly from Transact-SQL statements or from methods of assemblies that are created in the Microsoft .
PUT_LINE('Record successfully inserted into emp_backup table'); END; Second Problem: We want o update a record in the ’emp_backup’ table if a corresponding record is updated in the ’emp’ table.
As we’ve already created both the tables in above example, we will directly write a trigger for ‘AFTER UPDATE’.
To validate the email, we used the LIKE operator to determine whether the email is valid or not based on the email pattern.
If the email is not valid, the The phones and emails of the leads are so important that you can’t afford to lose this information.
If you use a condition in the clause, the trigger is executed for all rows.
An SQLite trigger is a named database object that is executed automatically when an INSERT, UPDATE, or DELETE statement is issued against the associated table.Now before updating ’empid’ column in ’emp’ table see the ’emp’ and ’emp_backup’ table records.Vishwanath Dalvi is a gifted engineer and tech enthusiast. When not hacking around or supporting the open source community, he is trying to overcome his phobia of dogs.A database trigger is a stored procedure that automatically executes whenever an event occurs. Oracle initiates an ‘AFTER INSERT’ trigger after an insert event has been occurred and an ‘AFTER UPDATE’ trigger after an update event has been occurred.CREATE or REPLACE TRIGGER emp_after_insert AFTER INSERT ON emp FOR EACH ROW DECLARE BEGIN insert into emp_backup values (:new.empid, :new.fname, :new.lname); DBMS_OUTPUT.