[EpiData-list] preventing duplicate entries

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Mon Nov 23 13:47:10 CST 2009

I am entering daily visit counts to walk-in clinics in our area. There 
are 6 clinics or sites. So a record is uniquely identified by site and 
date. Is there a way to prevent the entry of records with a site-date 
combination that duplicates a site-date combination that already exists 
in the database?


Christopher W. Ryan, MD
SUNY Upstate Medical University Clinical Campus at Binghamton
425 Robinson Street, Binghamton, NY  13901

"If you want to build a ship, don't drum up the men to gather wood, 
divide the work and give orders. Instead, teach them to yearn for the 
vast and endless sea."  [Antoine de St. Exupery]

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