Sql Essentials

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This book covers all the beginning SQL and some intermediate and advanced topics. Comparisons are shown between Oracle, Microsoft SQL Server, Microsoft Access, and MySQL. The presentation sticks as close to ANSI-SQL as possible. This is done because ANSI-SQL is the most portable. When necessary the database specific code is used to accomplish common tasks. This book can be used as a supplemental book in a database theory course where more coverage of SQL topics is needed. It is well suited for a course covering just SQL with a few design concepts during a typical 15-week semester. To support this use a small appendix covering the principles of database design is included. No prior knowledge of SQL is assumed.