Index: doc/src/sgml/ref/create_domain.sgml
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RCS file: /projects/cvsroot/pgsql/doc/src/sgml/ref/create_domain.sgml,v
retrieving revision 1.22
diff -c -r1.22 create_domain.sgml
*** doc/src/sgml/ref/create_domain.sgml	2 May 2005 01:52:50 -0000	1.22
--- doc/src/sgml/ref/create_domain.sgml	9 Sep 2005 21:21:39 -0000
***************
*** 48,57 ****
    </para>
  
    <para>
!    Domains are useful for abstracting common fields between tables into
!    a single location for maintenance.  For example, an email address column may be used
!    in several tables, all with the same properties.  Define a domain and
!    use that rather than setting up each table's constraints individually.
    </para>
   </refsect1>
  
--- 48,60 ----
    </para>
  
    <para>
!    Domains are useful for abstracting common fields between tables
!    into a single location for maintenance.  For example, an email address
!    column may be used in several tables, all with the same properties.
!    Define a domain and use that rather than setting up each table's
!    constraints individually. <note>Keep in mind also that declaring a
!    function result value as a domain is pretty dangerous, because none of
!    the PLs enforce domain constraints on their results.</note>
    </para>
   </refsect1>