Chapter 7. Advanced Features

This chapter covers more advanced PostgreSQL subjects including optimizing table access with indices, advanced table concepts such as inheritance and constraints, the practical use of non-atomic array values, and explicit use of transactions and cursors. These sophisticated features greatly set PostgreSQL apart from many other relational database management systems.

This chapter also documents programmatic concepts such as triggers and sequences. Finally, for programmers wanting to add customized routines to the database, we document how to extend PostgreSQL through the addition of user-defined functions and operators.

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