Help With Duplicate Fields Please!

Dec 9, 2004

Hi, doing my project at college, decided to do a EPOS simulator for my sisters business based around barcodes etc and tied to a database. i've just knocked up something after normalising my data to prototype it to see if it is viable. I'm having problems with duplicate field entries. My db consists of essentially 4 tables at this point:

User : user ID, User Details

Product: Product ID, Barcode, Description, Cost Price, Sell Price

Transaction: Transaction Number, Date, User ID, Transaction Total

Transaction/Product - a compound key which is to manage the many to many that exists between Product and Transaction tables.

I am wanting to allow multiple entries for the same item, i.e. multiple scans, not a single sacn followed by a quantity. I keep getting an error message though that syas I am duplicating fields. I have tried altering the Index property for the fields in the Product/Transaction table but htis has had little effect.

Any thoughts please as to how to do this? I have attached the db for examination.

many thanks, Lol :D

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