SQL and Relational Theory: How to Write Accurate SQL Code
SQL and Relational Theory: How to Write Accurate SQL Code By C. J. Date
Publisher: O'Re..illy Me..dia; Second edition 2011 | 446 Pages | ISBN: 1449316409 | EPUB + PDF | 3 MB + 20 MB
Publisher: O'Re..illy Me..dia; Second edition 2011 | 446 Pages | ISBN: 1449316409 | EPUB + PDF | 3 MB + 20 MB
SQL is full of difficulties and traps for the unwary. You can avoid them if you understand relational theory, but only if you know how to put the theory into practice. In this insightful book, author C.J. Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it directly to your use of SQL. This second edition includes new material on recursive queries, “missing information” without nulls, new update operators, and topics such as aggregate operators, grouping and ungrouping, and view updating. If you have a modest-to-advanced background in SQL, you’ll learn how to deal with a host of common SQL dilemmas. Database theory and practice have evolved since the relational model was developed more than 40 years ago. SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of SQL available.
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