I´m using Interbase 6.0. I have an application in which everytime a customer buys something I have to update two tables. One is the Item table that I have to subtract the number of items the customer bought. And the other one is the Clients table that I have to Sum the total of it´s purchase. I want to make a StoredProcedure to do it for me. Does anyone have any examples ? And if it´s better doing it with StoredProcedure or with Querys ?