I'm just trying to prevent an accidental double billing for the same item... with a unique index you can only create one instance of ... that student(10) in that class(101) during that session(5th).
It would not allow the insert record. Gary -----Original Message----- From: MB Software Solutions, LLC [mailto:[email protected]] Sent: Wednesday, April 24, 2013 3:03 PM To: ProFox Email List Subject: Re: primary or unique index On 4/24/2013 3:46 PM, Jean MAURICE wrote: > CAUTION : in VFP a 'UNIQUE' index means that it will keep only the first > occurence of a value and it is not very useful ... Other than for something like a SEEK command, I never understood the purpose/need for the UNIQUE index in VFP. Hopefully some of the insiders from long ago know why and can explain it to the rest of us. -- Mike Babcock, MCP MB Software Solutions, LLC President, Chief Software Architect http://mbsoftwaresolutions.com http://fabmate.com http://twitter.com/mbabcock16 _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/A5395F4081B64EDCB2E8F2A953C6F793@OwnerPC ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
