<para>

To assign privileges, the <command>GRANT</command> command is

used. For example, if <literal>joe</literal> is an existinguser, and

used. For example, if <literal>joe</literal> is an existingrole, and

<literal>accounts</literal> is an existing table, the privilege to

update the table can be granted with:

<programlisting>

</para>

<para>

The special <quote>user</quote> name <literal>PUBLIC</literal> can

be used to grant a privilege to everyuser on the system. Also,

The special <quote>role</quote> name <literal>PUBLIC</literal> can

be used to grant a privilege to everyrole on the system. Also,

<quote>group</> roles can be set up to help manage privileges when

there are many users of a database &mdash; for details see

<xref linkend="user-manag">.