SQL and relational theory how to write accurate SQL code
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 exerc...
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| Format: | eBook |
| Language: | Inglés |
| Published: |
Sebastopol, CA :
O'Reilly
2011.
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| Edition: | 2nd ed |
| Series: | Theory in practice (Sebastopol, Calif.)
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| Subjects: | |
| See on Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009628224106719 |
| Summary: | 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-a |
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| Item Description: | Description based upon print version of record. |
| Physical Description: | 1 online resource (446 p.) |
| Bibliography: | Includes bibliographical references and index. |
| ISBN: | 9781449319748 9781449319755 |
