## 52.32. `pg_namespace`

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 The catalog `pg_namespace` stores namespaces. A namespace is the structure underlying SQL schemas: each namespace can have a separate collection of relations, types, etc. without name conflicts.

**Table 52.32. `pg_namespace` Columns**

|                                     Column Type<br/><br/> Description                                    |
|----------------------------------------------------------------------------------------------------------|
|                                   `oid` `oid`<br/><br/> Row identifier                                   |
|                             `nspname` `name`<br/><br/> Name of the namespace                             |
|`nspowner` `oid` (references [`pg_authid`](catalog-pg-authid.html).`oid`)<br/><br/> Owner of the namespace|
|      `nspacl` `aclitem[]`<br/><br/> Access privileges; see [Section 5.7](ddl-priv.html) for details      |

