<para>
   The view <literal>administrable_role_authorizations</literal>
   identifies all roles that the current user has the admin option
   for.
  </para>

  <table>
   <title><structname>administrable_role_authorizations</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>grantee</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the role to which this role membership was granted (can
       be the current user, or a different role in case of nested role
       memberships)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>role_name</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of a role
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>is_grantable</structfield> <type>yes_or_no</type>
      </para>
      <para>
       Always <literal>YES</literal>
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>
 </sect1>

 <sect1 id="infoschema-applicable-roles">
  <title><literal>applicable_roles</literal></title>

  <para>
   The view <literal>applicable_roles</literal> identifies all roles
   whose privileges the current user can use.  This means there is
   some chain of role grants from the current user to the role in
   question.  The current user itself is also an applicable role.  The
   set of applicable roles is generally used for permission checking.
   <indexterm><primary>applicable role</primary></indexterm>
   <indexterm><primary>role</primary><secondary>applicable</secondary></indexterm>
  </para>

  <table>
   <title><structname>applicable_roles</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>grantee</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the role to which this role membership was granted (can
       be the current user, or a different role in case of nested role
       memberships)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>role_name</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of a role
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>is_grantable</structfield> <type>yes_or_no</type>
      </para>
      <para>
       <literal>YES</literal> if the grantee has the admin option on
       the role, <literal>NO</literal> if not
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>
 </sect1>

 <sect1 id="infoschema-attributes">
  <title><literal>attributes</literal></title>

  <para>
   The view <literal>attributes</literal> contains information about
   the attributes of composite data types defined in the database.
   (Note that the view does not give information about table columns,
   which are sometimes called attributes in PostgreSQL contexts.)
   Only those attributes are shown that the current user has access to (by way
   of being the owner of or having some privilege on the type).
  </para>

  <table>
   <title><structname>attributes</structname> Columns</title>
   <tgroup cols="1">
    <thead>
     <row>
      <entry role="catalog_table_entry"><para