SQL Server Constraints
(About.com) Database constraints provide you with a way to enforce business logic within your database. In this series of articles, we explore the constraints available to you within Microsoft SQL Server.
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Introduction to SQL Server Constraints
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Update update feed set failed_fetches=0, fetched=current_timestamp() where feed_id = 1129 failed: 1142 [UPDATE command denied to user '334187_hdlns_ms5'@'10.187.248.89' for table 'feed'] in [update feed set failed_fetches=0, fetched=current_timestamp() where feed_id = 1129]
updated 1129 (Databases), inserted 9, updated 0, at 2012-05-27 17:22:46
