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  • INTERVIEW QUESTIONS DATABASE SQL DETAILS
    Question :
    Difference between Stored Procedure and Trigger


    Category SQL Interview Questions
    Rating (0.4) By 1206 users
    Added on 8/12/2006
    Views 6743
    Rate it!
    Answers:

    Information related to Stored procedure you can see in USER_SOURCE,USER_OBJECTS(current user) tables.

    Information related to triggers stored in USER_SOURCE,USER_TRIGGERS (current user) Tables.

    Stored procedure can't be inactive but trigger can be Inactive.



    we can call stored procedure explicitly.

    but trigger is automatically invoked when the action defined in trigger is done.
    ex:
    create trigger <trig_Name> after Insert on <table>


    this trigger invoked after we insert something on that table.



    Posted by: sathyaajh    

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    Triggers are used to initiate a particular activity after fulfilling certain condition.It need to define and can be enable and disable according to need.



    Posted by: Amit    

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    Triggers get invoked automatically when the event specified in it gets fulfilled, it can't return any value.So user have no control over it's invocation.Whereas stored procedure can be called as per application requirement and can get output parameters.



    Posted by: nilambari    

    Contact nilambari Contact nilambari

    stored procedure is a block of code contains sql statements.
    stored procedure is a precompiled block of code,which need not be compiled for every time calling.

    trigger is a user defined constraint it has to be called when situation araises.



    Posted by: pushpa g    

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    Triggers once defined are called automatically, there can be no explicit invocation
    Stored procedure has to be called explicitly, moreover procedures can return values, triggers can't



    Posted by: mahendra    

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    Stored procedure used to perform operation. but trigger used to prevent operation.



    Posted by: Roobesh    

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    1. trigger doesnot except argument
    but store procedure does.
    2. trigger cannot be local and store as a stand alone object in database.
    but store procedure can be store in package.
    3. Trigger execute implicitly whereas store procedure execute via
    procedure call from another block.




    Posted by: Nitin    

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    you will have to call stored procedure but trigger automatically called



    Posted by: Shabbir Alam    

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    PROCEDURE-> means it will call the specified function,when we assumed it before.procedure is active.
    TRIGGER-> trigger are active for after fulfilling the specified conditions.



    Posted by: sandhya    

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    We can call stored procedure explicitly.but Trigger is invoked implicitly.

    procedures are invoked by the user whereas triggers are invoked by the system.

    procedure can be created with out a table but a trigger can't be created with out table.

    procedures accept parameters where as triggers can't.

    procedures return a value,triggers can't return any value.



    Posted by: ajay    

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    commit,savepoint and rollback
    are not allowed in triggers.
    We can write commit,savepoint and rollback in procedures.



    Posted by: Milind    

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    Triggers are used to initiate a particular activity after fulfilling certain condition.It need to define and can be enable and disable according to need.




    Posted by: william    

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    commit,savepoint and rollback
    are not allowed in triggers.
    We can write commit,savepoint and rollback in procedures.

    But we can add commit,rollback in trigger by adding next Line:
    Autonomous Transaction



    Posted by: Swapnil Bhosale    

    Contact Swapnil Bhosale Contact Swapnil Bhosale

    Stored procedures are used to perform a task and should be invoked explicitly using exec.
    Triggers are used to restrict invalid transactions and invokes(fires) implicitly when an dml manipulation happens



    Posted by: kiran    

    Contact kiran Contact kiran

    A Stored Procedure is set of pre-compiled sql statements which are stored in memory. These statements are executed by executing that procedure which display results based on arguments passed to that procedure.

    A trigger is invoked automatically when any operation (insertion,deletion and updation) is performed on particular table.Triggers are used to record events performed on table.



    Posted by: Rajiv    

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    Stored procedure
    ================
    stored procedure can accept the parameters from users whereas trigger cannot accept parameters from users

    A Trigger can call the specific Sp in it but the reverse is not true.





    Posted by: kavi    

    Contact kavi Contact kavi

    Triggers are stored procedures created in order to enforce integrity rules in a database. A trigger is executed every time a data-modification operation occurs (i.e., insert, update or delete). Triggers are executed automatically on occurance of one of the data-modification operations. A trigger is a database object directly associated with a particular table. It fires whenever a specific statement/type of statement is issued against that table. The types of statements are insert,update,delete and query statements. Basically, trigger is a set of SQL statements A trigger is a solution to the restrictions of a constraint. For instance: 1.A database column cannot carry PSEUDO columns as criteria where a trigger can. 2. A database constraint cannot refer old and new values for a row where a trigger can.



    Posted by: Gazi Md. Moshfiqul Islam    

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    gooooooooooooood



    Posted by: lokesh    

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    1> For executing Sp we have to call Stored Procedure. But in
    case of Trigger it is call whenever there is an action taken
    on table or column(Insert, Update ,Delete).
    2> From SP we pass Values But from Trigger we cant.
    3> stored procedure returns value but trigger cannot returns
    value.
    4> For SP we have to compile. for Trigger no need to compile.
    5> we return SP in Trigger but Trigger can not be in SP.



    Posted by: rajeev kumar gautam    

    Contact rajeev kumar gautam Contact rajeev kumar gautam

    To use stored procedure you have to make a call to that
    procedure but Triggers fired automatically when an event is
    occurred on the table associated with that Trigger like add,
    insert or delete.



    Posted by: rajeev     

    Contact rajeev Contact rajeev

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