- Which prefixes are available to Oracle triggers?
- What are some emotional triggers?
- Can a trigger written for a view *?
- What is the purpose of triggers?
- Which statement is used to remove a trigger?
- What is mutating in the trigger?
- How do you commit inside a trigger?
- What does trigger mean?
- What are the after triggers *?
- What are the different in triggers?
- Which of the following is not a typical trigger action?
- What is PL SQL trigger?
Which prefixes are available to Oracle triggers?
Which prefixes are available to Oracle triggers?A.
: new only.B.
: old only.Both :new and :old.Neither :new nor :old..
What are some emotional triggers?
Common situations that trigger intense emotions include:rejection.betrayal.unjust treatment.challenged beliefs.helplessness or loss of control.being excluded or ignored.disapproval or criticism.feeling unwanted or unneeded.More items…•
Can a trigger written for a view *?
Yes, you can create triggers on views. (Since at least SQL Server 2000.) If you create a trigger on a view, it won’t fire on inserts to the base table. If you want something to happen when you insert data into a base table, create a trigger on the base table.
What is the purpose of triggers?
Triggers are used to maintain the referential integrity of data by changing the data in a systematic fashion. Each trigger is attached to a single, specified table in the database. Triggers can be viewed as similar to stored procedures in that both consist of procedural logic that is stored at the database level.
Which statement is used to remove a trigger?
DROP TRIGGER statementWhich statement is used to remove a trigger? Explanation: In order to delete a trigger, the DROP TRIGGER statement is used.
What is mutating in the trigger?
A mutating table error (ORA-04091) occurs when a row-level trigger tries to examine or change a table that is already undergoing change (via an INSERT, UPDATE, or DELETE statement). In particular, this error occurs when a row-level trigger attempts to read or write the table from which the trigger was fired.
How do you commit inside a trigger?
Yes, you can commit inside the trigger. But for this you have to make this trigger transaction to be an Independent transaction from its parent transaction, you can do this by using Pragma. Pragma AUTONOMOUS_TRANSACTION allow you to build the Independent (child) Transaction, started by another.
What does trigger mean?
1a : a piece (such as a lever) connected with a catch or detent as a means of releasing it especially : the part of the action moved by the finger to fire a gun. b : a similar movable part by which a mechanism is actuated trigger of a spray gun.
What are the after triggers *?
After Trigger, Instead of Trigger ExampleAfter Trigger (using FOR/AFTER CLAUSE) This trigger fires after SQL Server completes the execution of the action successfully that fired it. … Instead of Trigger (using INSTEAD OF CLAUSE) This trigger fires before SQL Server starts the execution of the action that fired it.
What are the different in triggers?
In SQL Server we can create four types of triggers Data Definition Language (DDL) triggers, Data Manipulation Language (DML) triggers, CLR triggers, and Logon triggers.
Which of the following is not a typical trigger action?
9. Which of the following is not a typical trigger action? Explanation: Valid trigger actions are INSERT, UPDATE and DELETE, or a combination of several, separated by commas.
What is PL SQL trigger?
In this chapter, we will discuss Triggers in PL/SQL. Triggers are stored programs, which are automatically executed or fired when some events occur. Triggers are, in fact, written to be executed in response to any of the following events − A database manipulation (DML) statement (DELETE, INSERT, or UPDATE)