Could you advise as to how to better solve the problem.
There is th table M:M with the following structure
CLASS FK number ,
PROPERTY FK number ,
QUANTITY number .In my application I define PROPERTY & QUANTITY for the CLASS class (with the help of checkbox ) upon which I need to record the information/results. If I choose checkbox - the record is to be deleted, if it is not there - it should be added, if it is there QUANTITY should be updated. -- regards, Sergey mailto:[EMAIL PROTECTED]
