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Databases - Practical PostgreSQL
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Advanced Table Techniques

PostgreSQL provides several ways to constrain values inserted and updated within tables. One of these is the availability of table and column constraints .

PostgreSQL also supports an advanced object-relational table concept called inheritance . Inheritance allows separate tables to have an explicit parent-child relationship and, through this relationship, share columns in a hierarchical fashion.

The following sections document both types of SQL constraints, as well as the creation and application of inherited tables.

Databases - Practical PostgreSQL
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