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1<?xml version="1.0" encoding="UTF-8" standalone="no"?>2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>53.32. pg_namespace</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="catalog-pg-largeobject-metadata.html" title="53.31. pg_largeobject_metadata" /><link rel="next" href="catalog-pg-opclass.html" title="53.33. pg_opclass" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">53.32. <code class="structname">pg_namespace</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-largeobject-metadata.html" title="53.31. pg_largeobject_metadata">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 53. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 16.3 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="catalog-pg-opclass.html" title="53.33. pg_opclass">Next</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-NAMESPACE"><div class="titlepage"><div><div><h2 class="title" style="clear: both">53.32. <code class="structname">pg_namespace</code> <a href="#CATALOG-PG-NAMESPACE" class="id_link">#</a></h2></div></div></div><a id="id-1.10.4.34.2" class="indexterm"></a><p>3   The catalog <code class="structname">pg_namespace</code> stores namespaces.4   A namespace is the structure underlying SQL schemas: each namespace5   can have a separate collection of relations, types, etc. without name6   conflicts.7  </p><div class="table" id="id-1.10.4.34.4"><p class="title"><strong>Table 53.32. <code class="structname">pg_namespace</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_namespace Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">8       Column Type9      </p>10      <p>11       Description12      </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">13       <code class="structfield">oid</code> <code class="type">oid</code>14      </p>15      <p>16       Row identifier17      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">18       <code class="structfield">nspname</code> <code class="type">name</code>19      </p>20      <p>21       Name of the namespace22      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">23       <code class="structfield">nspowner</code> <code class="type">oid</code>24       (references <a class="link" href="catalog-pg-authid.html" title="53.8. pg_authid"><code class="structname">pg_authid</code></a>.<code class="structfield">oid</code>)25      </p>26      <p>27       Owner of the namespace28      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">29       <code class="structfield">nspacl</code> <code class="type">aclitem[]</code>30      </p>31      <p>32       Access privileges; see <a class="xref" href="ddl-priv.html" title="5.7. Privileges">Section 5.7</a> for details33      </p></td></tr></tbody></table></div></div><br class="table-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="catalog-pg-largeobject-metadata.html" title="53.31. pg_largeobject_metadata">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="catalog-pg-opclass.html" title="53.33. pg_opclass">Next</a></td></tr><tr><td width="40%" align="left" valign="top">53.31. <code class="structname">pg_largeobject_metadata</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.3 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 53.33. <code class="structname">pg_opclass</code></td></tr></table></div></body></html>