A Tale of Identifiers

Posted on SQL Server Central See other posts from SQL Server Central
Published on Mon, 20 Jun 2011 06:00:00 UT Indexed on 2011/06/20 16:33 UTC
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Identifiers aren't locators, and they aren't pointers or links either. They are a logical concept in a relational database, and, unlike the more traditional methods of accessing data, don't derive from the way that data gets stored. Identifiers uniquely identify members of the set, and it should be possible to validate and verify them. Celko somehow involves watches and taxi cabs to illustrate the point.

A Tale of Identifiers

Posted on Simple Talk See other posts from Simple Talk
Published on Thu, 09 Jun 2011 00:00:00 GMT Indexed on 2011/06/20 16:34 UTC
Read the original article Hit count: 227

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T-SQL Programming

Identifiers aren't locators, and they aren't pointers or links either. They are a logical concept in a relational database, and, unlike the more traditional methods of accessing data, don't derive from the way that data gets stored. Identifiers uniquely identify members of the set, and it should be possible to validate and verify them. Celko somehow involves watches and taxi cabs to illustrate the point.

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