Add mention of SET CONSTRAINT and CREATE CONSTRAINT TRIGGER.

doc/src/sgml/ref/allfiles.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/allfiles.sgml,v 1.17 2000/04/08 05:11:03 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/allfiles.sgml,v 1.18 2000/04/14 15:17:28 thomas Exp $
 Postgres documentation
 Complete list of usable sgml source files in this directory.
 -->
@@ -50,6 +50,7 @@ Complete list of usable sgml source files in this directory.
 <!entity commit             system "commit.sgml">
 <!entity copyTable          system "copy.sgml">
 <!entity createAggregate    system "create_aggregate.sgml">
+<!entity createConstraint   system "create_constraint.sgml">
 <!entity createDatabase     system "create_database.sgml">
 <!entity createFunction     system "create_function.sgml">
 <!entity createGroup        system "create_group.sgml">

doc/src/sgml/ref/commands.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/Attic/commands.sgml,v 1.24 2000/04/08 05:11:03 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/Attic/commands.sgml,v 1.25 2000/04/14 15:17:28 thomas Exp $
 Postgres documentation
 -->
 
@@ -24,6 +24,7 @@ Postgres documentation
    &commit;
    &copyTable;
    &createAggregate;
+   &createConstraint;
    &createDatabase;
    &createFunction;
    &createGroup;

doc/src/sgml/ref/create_constraint.sgml

+<!--
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_constraint.sgml,v 1.1 2000/04/14 15:17:28 thomas Exp $
+Postgres documentation
+-->
+
+<refentry id="SQL-CREATECONSTRAINT">
+ <refmeta>
+  <refentrytitle id="sql-createconstraint-title">
+   CREATE CONSTRAINT TRIGGER
+  </refentrytitle>
+  <refmiscinfo>SQL - Language Statements</refmiscinfo>
+ </refmeta>
+ <refnamediv>
+  <refname>
+   CREATE CONSTRAINT TRIGGER
+  </refname>
+  <refpurpose>
+   Create a trigger to support a constraint
+  </refpurpose>
+ </refnamediv>
+ <refsynopsisdiv>
+  <refsynopsisdivinfo>
+   <date>2000-04-13</date>
+  </refsynopsisdivinfo>
+  <synopsis>
+CREATE CONSTRAINT TRIGGER <replaceable class="parameter">name</replaceable>
+    AFTER <replaceable class="parameter">events</replaceable> ON
+    <replaceable class="parameter">relation</replaceable> <replaceable class="parameter">constraint</replaceable> <replaceable class="parameter">attributes</replaceable>
+    FOR EACH ROW EXECUTE PROCEDURE <replaceable class="parameter">func</replaceable> '(' <replaceable class="parameter">args</replaceable> ')'
+  </synopsis>
+
+  <refsect2 id="R2-SQL-CREATECONSTRAINT-1">
+   <title>
+    Inputs
+   </title>
+   <para>
+		
+    <variablelist>
+     <varlistentry>
+      <term><replaceable class="PARAMETER">name</replaceable></term>
+      <listitem>
+       <para>
+	The name of the constraint trigger.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="PARAMETER">events</replaceable></term>
+      <listitem>
+       <para>
+	The event categories for which this trigger should be fired.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="PARAMETER">relation</replaceable></term>
+      <listitem>
+       <para>
+	Table name of the triggering relation.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="PARAMETER">constraint</replaceable></term>
+      <listitem>
+       <para>
+	Actual onstraint specification.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="PARAMETER">attributes</replaceable></term>
+      <listitem>
+       <para>
+	Contraint attributes.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="PARAMETER">func</replaceable>(<replaceable class="PARAMETER">args</replaceable>)</term>
+      <listitem>
+       <para>
+	Function to call as part of the trigger processing.
+       </para>
+      </listitem>
+     </varlistentry>
+    </variablelist>
+   </para>
+  </refsect2>
+
+  <refsect2 id="R2-SQL-CREATECONSTRAINT-2">
+   <title>
+    Outputs
+   </title>
+   <para>
+    
+    <variablelist>
+     <varlistentry>
+      <term><computeroutput>
+CREATE CONSTRAINT
+       </computeroutput></term>
+      <listitem>
+       <para>
+	Message returned if successful.
+       </para>
+      </listitem>
+     </varlistentry>
+    </variablelist>
+   </para>
+  </refsect2>
+ </refsynopsisdiv>
+
+ <refsect1 id="R1-SQL-CREATECONSTRAINT-1">
+  <title>
+   Description
+  </title>
+  <para>
+   <command>CREATE CONSTRAINT TRIGGER</command> is used from inside of 
+   <command>CREATE/ALTER TABLE</command> and by
+   <application>pg_dump</application>  to  create  the  special  triggers  for
+   referential  integrity.
+  </para>
+
+  <para>
+   It is not intended for general use.
+  </para>
+ </refsect1>
+</refentry>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:nil
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+sgml-parent-document:nil
+sgml-default-dtd-file:"../reference.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:"/usr/lib/sgml/catalog"
+sgml-local-ecat-files:nil
+End:
+-->

doc/src/sgml/ref/set.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.39 2000/04/11 17:23:35 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.40 2000/04/14 15:17:28 thomas Exp $
 Postgres documentation
 -->
 
@@ -24,6 +24,7 @@ Postgres documentation
   </refsynopsisdivinfo>
   <synopsis>
 SET <replaceable class="PARAMETER">variable</replaceable> { TO | = } { <replaceable class="PARAMETER">value</replaceable> | '<replaceable class="PARAMETER">value</replaceable>' | DEFAULT }
+SET CONSTRAINTS {ALL | <replaceable class="parameter">constraintlist</replaceable>} <replaceable>mode</replaceable>
 SET TIME ZONE { '<replaceable class="PARAMETER">timezone</replaceable>' | LOCAL | DEFAULT }
 SET TRANSACTION ISOLATION LEVEL { READ COMMITTED | SERIALIZABLE }
   </synopsis>
@@ -92,7 +93,7 @@ SET TRANSACTION ISOLATION LEVEL { READ COMMITTED | SERIALIZABLE }
      </varlistentry>
 
      <varlistentry>
-      <term>DateStyle</term>
+      <term>DATESTYLE</term>
       <listitem>
        <para>
 	Set the date/time representation style. Affects the output format,
@@ -202,7 +203,7 @@ SET TRANSACTION ISOLATION LEVEL { READ COMMITTED | SERIALIZABLE }
      </varlistentry>
 
      <varlistentry>
-      <term>Seed</term>
+      <term>SEED</term>
       <listitem>
        <para>
 	Sets the internal seed for the random number generator.
@@ -243,14 +244,14 @@ SELECT setseed(<replaceable>value</replaceable>);
       <term>SERVER_ENCODING</term>
       <listitem>
        <para>
-	Sets the multi-byte server encoding
+	Sets the multi-byte server encoding to:
 	
 	<variablelist>
 	 <varlistentry>
 	  <term><replaceable class="parameter">value</replaceable></term>
 	  <listitem>
 	   <para>
-	    Sets the multi-byte server encoding.
+	    The identifying value for the server encoding.
 	   </para>
 	  </listitem>
 	 </varlistentry>
@@ -265,6 +266,47 @@ SELECT setseed(<replaceable>value</replaceable>);
      </varlistentry>
 
      <varlistentry>
+      <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:
+
+	<variablelist>
+	 <varlistentry>
+	  <term><replaceable class="parameter">constraintlist</replaceable></term>
+	  <listitem>
+	   <para>
+	    Comma separated list of deferrable constraint names.
+	   </para>
+	  </listitem>
+	 </varlistentry>
+
+	 <varlistentry>
+	  <term><replaceable class="parameter">mode</replaceable></term>
+	  <listitem>
+	   <para>
+	    The constraint mode. Allowed values are
+	    <option>DEFERRED</option> and <option>IMMEDIATE</option>.
+	   </para>
+	  </listitem>
+	 </varlistentry>
+	</variablelist>
+       </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.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term>TIME ZONE</term>
       <term>TIMEZONE</term>
       <listitem>
        <para>
@@ -862,7 +904,7 @@ SET VARIABLE
        </computeroutput></term>
       <listitem>
        <para>
-	Message returned if successfully.
+	Message returned if successful.
        </para>
       </listitem>
      </varlistentry>