Update set constraints man page

diff --git a/doc/src/sgml/ref/set.sgml b/doc/src/sgml/ref/set.sgml
index 0628ed673a6cdf0dfaebae3f45b5b24ffab8dc29..172151eddd32af0050d33b11939bacb3291bc03e 100644 (file)
--- a/doc/src/sgml/ref/set.sgml
+++ b/doc/src/sgml/ref/set.sgml
@@ -1,5 +1,5 @@
 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.40 2000/04/14 15:17:28 thomas Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.41 2000/04/14 23:12:29 momjian Exp $
 Postgres documentation
 -->
 
@@ -269,10 +269,9 @@ SELECT setseed(<replaceable>value</replaceable>);
       <term>CONSTRAINT</term>
       <listitem>
        <para>
-   SET CONSTRAINTS is the SQL3 specified command to  change  the
-   default behaviour of constraints with respect to deferring in the current
-   transaction. Allowed parameters are:
-
+   SET CONSTRAINTS controls the frequency of foreign key
+   constratint checking in the current transaction. Allowed
+   parameters are:
    <variablelist>
     <varlistentry>
      <term><replaceable class="parameter">constraintlist</replaceable></term>
@@ -296,11 +295,11 @@ SELECT setseed(<replaceable>value</replaceable>);
        </para>
 
        <para>
-   In deferred mode, the actual check of the constraint is  held
-   back  until  either its mode is explicitly set to <option>IMMEDIATE</option>,
-   or until COMMIT.  This is actually only done for foreign  key
-   constraints,  so  it  does  not  apply  to  UNIQUE  or  other
-   constraints.
+   In <option>DEFERRED</option> mode, foreign key constraints
+   marked as <option>DEFERRABLE</option> are checked only at
+   transaction commit.
+   In <option>IMMEDIATE</option> mode, foreign key constraints
+   are checked at the end of each query.
        </para>
       </listitem>
      </varlistentry>