Trigger Questions

Hello all,

        I want to create a trigger. The trigger is fired when column A or column B is modified or a record newly insert into table T. Is this possible? And how to do this?

        Moreover, if both column A and column B values are changed, how can I prevent the trigger fired twice?

THanks,
Jimmy Received on Wed May 27 1998 - 09:14:22 CDT