SQL and Relational Theory: How to Write Accurate SQL CodeUnderstanding SQL's underlying theory is the best way to guarantee that your SQL code is correct and your database schema is robust and maintainable. On the other hand, if you're not well versed in the theory, you can fall into several traps. In SQL and Relational Theory, author C.J. Date demonstrates how you can apply relational theory directly to your use of SQL. With numerous examples and clear explanations of the reasoning behind them, you'll learn how to deal with common SQL dilemmas, such as:
Database theory and practice have evolved since Edgar Codd originally defined the relational model back in 1969. Independent of any SQL products, SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of the material available anywhere. Anyone with a modest to advanced background in SQL will benefit from the many insights in this book. |
Contents
Setting the Scene | 1 |
Types and Domains | 27 |
Tuples and Relations Rows and Tables | 53 |
No Duplicates No Nulls | 71 |
Base Relvars Base Tables | 89 |
The Original Operators | 107 |
Additional Operators | 133 |
SQL and Constraints | 161 |
SQL and Logic | 205 |
Using Logic to Formulate SQL Expressions | 233 |
Miscellaneous SQL Topics | 255 |
The Relational Model | 269 |
Database Design Theory | 285 |
Answers to Exercises | 313 |
Suggestions for Further Reading | 389 |
397 | |