Your data entry should be combo/dropdown boxes that cascade and only show the appropriate values to pick from. The typical solution involves Ajax. Duane Hookom MVPMS Access
> To: MS_Access_Professionals@yahoogroups.com
> From: robinski@mymail.net.au
> Date: Wed, 27 Mar 2013 11:52:53 +1100
> Subject: [MS_AccessPros] How do I prevent duplication of records?
>
> I have a table which includes the fields: "MemberID" and "YearID" and "PostID".
>
> How do I prevent duplication of the combination of the three fields
> berceuse data entry is not by Access form?
>
> Data entry is on a remote server by ASP pages.
>
> Many Thanks.
>
> Robin Chapple
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