Best Method
You could use the Before Update event of the form to check whether the combination of the 5 fields occurs in the table for values of the autonumber field <> the value of the autonumber field in...
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Hans,Thanks for your information. If I don't like the access generated message as a result of not being unique, can I use a on error event to replace it? So where would I use that event?
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Since everyone suggested that my primary key was not a good idea, I don't have any idea how to do this check. Any suggestions?Hi tkosel,For creating new records, I use an unbound New-form for entering...
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Best Method
As others have suggested, use an AutoNumber field as primary key.Then create a composite index on the 5 fields, and set the Unique property of this index to Yes. Users won't be able to enter duplicate...
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I have a table with 5 fields that I am concerned with. I was going to concatenate the data in those five fields to create a new field. I was going to make this new field the primary key, as that...
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