--- /dev/null
+package FS::dbdef_index;
+
+use strict;
+use vars qw(@ISA);
+use FS::dbdef_colgroup;
+
+@ISA=qw(FS::dbdef_colgroup);
+
+=head1 NAME
+
+FS::dbdef_unique.pm - Index object
+
+=head1 SYNOPSIS
+
+ use FS::dbdef_index;
+
+ # see FS::dbdef_colgroup methods
+
+=head1 DESCRIPTION
+
+FS::dbdef_unique objects represent the (non-unique) indices of a table
+(L<FS::dbdef_table>). FS::dbdef_unique inherits from FS::dbdef_colgroup.
+
+=head1 BUGS
+
+Is this empty subclass needed?
+
+=head1 SEE ALSO
+
+L<FS::dbdef_colgroup>, L<FS::dbdef_record>, L<FS::Record>
+
+=cut
+
+1;
+