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thanks for your kind reply:-)
agreed, constraint can be used instead of trigger.
but the requirement is something different, if i use constraint it will check the defined uniqueness within the table...
March 1, 2013 at 10:57 pm
#1592648
thanks for the comments 🙂
will try this and get back
February 27, 2013 at 8:58 am
#1591594