Joe Celko's Data and Databases: Concepts in Practice

In this book, outspoken database magazine columnist Joe Celko waxes philosophic about fundamental concepts in database design and development. He points out misconceptions and plain ol' mistakes commonly made while creating databases including mathematical calculation errors, inappropriate key field choices, date representation goofs and more. Celko also points out the quirks in SQL itself. A detailed table-of-contents will quickly route you to your area of interest.