Chapter 9. Using Indexes, Constraints, and Partitions

Just as a fundamental understanding of schemas, tables, and views is essential for success as a database administrator, so is an understanding of indexes, constraints, and partitions. At their most basic, indexes, constraints, and partitions are control elements:

  • Indexes provide faster access to data because you do not need to search an entire table to get desired results.

  • Constraints control the way column values are used so you can be sure that columns contain acceptable values.

  • Partitions allow you to manage subsets of data ...

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