defaults for run-time configuration variables
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>oid</structfield> <type>oid</type>
       (references <link linkend="catalog-pg-authid"><structname>pg_authid</structname></link>.<structfield>oid</structfield>)
      </para>
      <para>
       ID of role
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>

 </sect1>

 <sect1 id="view-pg-rules">
  <title><structname>pg_rules</structname></title>

  <indexterm zone="view-pg-rules">
   <primary>pg_rules</primary>
  </indexterm>

  <para>
   The view <structname>pg_rules</structname> provides access to
   useful information about query rewrite rules.
  </para>

  <table>
   <title><structname>pg_rules</structname> Columns</title>
   <tgroup cols="1">
    <thead>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       Column Type
      </para>
      <para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>schemaname</structfield> <type>name</type>
       (references <link linkend="catalog-pg-namespace"><structname>pg_namespace</structname></link>.<structfield>nspname</structfield>)
      </para>
      <para>
       Name of schema containing table
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>tablename</structfield> <type>name</type>
       (references <link linkend="catalog-pg-class"><structname>pg_class</structname></link>.<structfield>relname</structfield>)
      </para>
      <para>
       Name of table the rule is for
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>rulename</structfield> <type>name</type>
       (references <link linkend="catalog-pg-rewrite"><structname>pg_rewrite</structname></link>.<structfield>rulename</structfield>)
      </para>
      <para>
       Name of rule
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>definition</structfield> <type>text</type>
      </para>
      <para>
       Rule definition (a reconstructed creation command)
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>

  <para>
   The <structname>pg_rules</structname> view excludes the <literal>ON SELECT</literal> rules
   of views and materialized views; those can be seen in
   <link linkend="view-pg-views"><structname>pg_views</structname></link> and <link linkend="view-pg-matviews"><structname>pg_matviews</structname></link>.
  </para>

 </sect1>

 <sect1 id="view-pg-seclabels">
  <title><structname>pg_seclabels</structname></title>

  <indexterm zone="view-pg-seclabels">
   <primary>pg_seclabels</primary>
  </indexterm>

  <para>
   The view <structname>pg_seclabels</structname> provides information about
   security labels.  It as an easier-to-query version of the
   <link linkend="catalog-pg-seclabel"><structname>pg_seclabel</structname></link> catalog.
  </para>

  <table>
   <title><structname>pg_seclabels</structname> Columns</title>
   <tgroup cols="1">
    <thead>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       Column Type
      </para>
      <para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>objoid</structfield> <type>oid</type>
       (references any OID column)
      </para>
      <para>
       The OID of the object this security label pertains to
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>classoid</structfield>