PostgreSQL 7.1.3 Documentation
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# 3.7. pg_description

The pg_description table can store an optional description or comment for each database object. Descriptions can be manipulated with the COMMENT command. Client applications can view the descriptions by joining with this table. Many builtin system objects have comments associated with them that are shown by psql's `\d` commands.

Table 3-7. pg_description Columns

Name | Type | References | Description
--- | --- | --- | ---
objoid | `oid` | any oid attribute | The oid of the object this description pertains to
description | `text` |  | Arbitrary text that serves as the description of this object.

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