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    Trigger updating same table

    orm some validations) whenever the original table (on which the trigger is created) is selected or inserted, updated or deleted.  A trigger is used to ensure that certain jobs are automatically done when a predefined event occurs.An Example of Using the inserted Table in a Trigger to Enforce Business Rules Because CHECK constraints can reference only the columns on which the column-level or table-level constraint is defined, any cross-table constraints (in this case, business rules) must be defined as triggers. This trigger checks to make sure the credit rating for the vendor is good when an attempt is made to insert a new purchase order into the table must be referenced and joined with the inserted table.If the credit rating is too low, a message is displayed and the insertion does not execute. Credit Rating = 5 ) BEGIN RAISERROR (' A vendor''s credit rating is too low to accept new purchase orders.', 16, 1); ROLLBACK TRANSACTION; RETURN END; GO -- This statement attempts to insert a row into the Purchase Order Header table -- for a vendor that has a below average credit rating. Business Entity ID; The result set for this view has three columns: an int column and two nvarchar columns. HIPAA, the Sarbanes-Oxley Act, and the Gramm-Leach-Bliley Act have all produced serious constraints on Oracle professionals who are now required to produce detailed audit information for Oracle system users. federal laws have mandated increased security for auditing Oracle user activity.

    The first step is to create an Oracle table that can store the information gathered by the end-user logon/logoff triggers.

    In order to properly design these triggers, let's begin by looking at the information that's available inside the system-level triggers.

    First, we'll gather the information provided at login: Since the user logon/logoff triggers are separate entities, we have several choices in the design of a table to support this information.

    While Oracle provided the functionality for these new triggers, it was not clear how they could be used in order to track system-wide usage.

    This article describes my work in creating end-user login/logoff procedures to facilitate tracking end-user activity.

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