Thanks for the link, I tried creating an intermediate table yesterday, this table keeps combination of userID and MachineID as primary key, I think it should work now.

Thanks for all the help.

William Surowiec <wsurowiec@...> wrote:
Hi,

You may want to search for: +sql +"many to many"

one representative result with some decent images and text to help
understand what you need to do:

http://www.tonymarston.net/php-mysql/many-to-many.html

Bill





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