- What is difference between trigger and cursor?
- How do you execute a procedure in a trigger?
- Can we call trigger manually?
- What is difference between function and trigger?
- What is difference between stored procedure and function?
- What are the types of triggers?
- What does trigger mean?
- What is the advantage of stored procedure over the database triggers?
- Can we use trigger in stored procedure?
- What is procedure function and trigger?
- What are the after triggers?
- Can a trigger call a stored procedure Oracle?
What is difference between trigger and cursor?
Generally, a cursor is used to iterate through a result set that was returned by a SELECT statement.
Cursors can be used in stored procedures, stored functions, and triggers.
A trigger is a stored program executed automatically to respond to a specific event like an insert, update, or delete..
How do you execute a procedure in a trigger?
ProcedureWrite a basic CREATE TRIGGER statement specifying the desired trigger attributes. … In the trigger action portion of the trigger you can declare SQL variables for any IN, INOUT, OUT parameters that the procedure specifies. … In the trigger action portion of the trigger add a CALL statement for the procedure.More items…
Can we call trigger manually?
You cannot call triggers directly. They are fired automatically when you perform an insert/update or delete on a table that has triggers. Therefore, you cannot call a trigger in a stored procedure. Trigger needs to have deleted or inserted record when executes, and I cannot see how it can be passed…
What is difference between function and trigger?
Difference between Stored Procedure, SQL Function, and Trigger. Store procedure: We can execute the stored procedures when required. … Function can’t be executed because a function is not in pre-compiled form. Trigger: Trigger can be executed automatically on specified action on a table like, update, delete, or update.
What is difference between stored procedure and function?
The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.
What are the types of triggers?
Types of Triggers in OracleDML Trigger: It fires when the DML event is specified (INSERT/UPDATE/DELETE)DDL Trigger: It fires when the DDL event is specified (CREATE/ALTER)DATABASE Trigger: It fires when the database event is specified (LOGON/LOGOFF/STARTUP/SHUTDOWN)
What does trigger mean?
In mental health terms, a trigger refers to something that affects your emotional state, often significantly, by causing extreme overwhelm or distress. A trigger affects your ability to remain present in the moment. It may bring up specific thought patterns or influence your behavior.
What is the advantage of stored procedure over the database triggers?
Advantage of a stored procedure over a database trigger. Stored procedures can accept parameters and can return values. Triggers can neither accept parameters nor return values. A Trigger is dependent on a table and the application has no control to not fire a trigger when not needed.
Can we use trigger in stored procedure?
You cant call Trigger from Stored Procedure, as Trigger are created on table and get fired implicitly. But you can call stored procedure to from trigger, but do remeber it should not be recursive.
What is procedure function and trigger?
Procedures doesn’t return any values their just get parameters and do something with them, functions does the same by their also can return you a value based on their work. Triggers are kind of event handlers that react on any action you want and start procedure when this action happens.
What are the after triggers?
What are the after triggers? Explanation: AFTER TRIGGERS can be classified further into three types as: AFTER INSERT Trigger, AFTER UPDATE Trigger, AFTER DELETE Trigger. Explanation: Example : declare @empid int; where empid is the variable.
Can a trigger call a stored procedure Oracle?
A trigger can include SQL and PL/SQL statements to execute as a unit and can invoke stored procedures. However, procedures and triggers differ in the way that they are invoked. A procedure is explicitly executed by a user, application, or trigger.