marthasmithuk (11/9/2012)
Create stored procedure for users registration. Procedure accepts two parameters: username and password and introduces these two values into table entitled Users. Table users has three columns: ID, username and password. When activating procedure it is first to check if the user with that username already exists in the table. If exists, the entry does not execute and the procedure returns an error message (number -1). If the user does not exist the entry introduces to database and the procedure returns success message (zero 0).
This sounds a LOT like homework. Typically most people around here don't do homework for people. We can help when you get stuck. How about if you post your table and what you have tried so far? Then maybe post some thoughts about what steps you need to do next.
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