<para>

The apply process on the subscriber database always runs with

<varname>session_replication_role</varname> set

to <literal>replica</literal>, which produces the usual effects on triggers

and constraints.

<link linkend="guc-session-replication-role"><varname>session_replication_role</varname></link>

set to <literal>replica</literal>. This means that, by default,

triggers and rules will not fire on a subscriber. Users can optionally choose to

enable triggers and rules on a table using the

<link linkend="sql-altertable"><command>ALTER TABLE</command></link> command

and the <literal>ENABLE TRIGGER</literal> and <literal>ENABLE RULE</literal>

clauses.

</para>

<para>