diff --git a/mysql/tables/llx_surveys_answers.sql b/mysql/tables/llx_surveys_answers.sql
index 6b81110f791..b286230599f 100644
--- a/mysql/tables/llx_surveys_answers.sql
+++ b/mysql/tables/llx_surveys_answers.sql
@@ -16,8 +16,6 @@
 -- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 --
 -- $Id$
--- $Source$
---
 -- ===========================================================================
 
 CREATE TABLE llx_surveys_answers (
diff --git a/mysql/tables/llx_surveys_answers_summary.key.sql b/mysql/tables/llx_surveys_answers_summary.key.sql
new file mode 100644
index 00000000000..f0174e6a54f
--- /dev/null
+++ b/mysql/tables/llx_surveys_answers_summary.key.sql
@@ -0,0 +1,21 @@
+-- ============================================================================
+-- Copyright (C) 2007 Laurent Destailleur  <eldy@users.sourceforge.net>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 2 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program; if not, write to the Free Software
+-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+--
+-- $Id$
+-- ===========================================================================
+
+
diff --git a/mysql/tables/llx_surveys_answers_summary.sql b/mysql/tables/llx_surveys_answers_summary.sql
index 0e5fc6f84a2..58c93dffad2 100644
--- a/mysql/tables/llx_surveys_answers_summary.sql
+++ b/mysql/tables/llx_surveys_answers_summary.sql
@@ -16,12 +16,10 @@
 -- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 --
 -- $Id$
--- $Source$
---
 -- ===========================================================================
 
 CREATE TABLE llx_surveys_answers_summary (
-  fk_question       integer NOT NULL,
+  fk_question       integer PRIMARY KEY,
   nb_rep1           decimal(10,0) NOT NULL default '0',
   nb_rep2           decimal(10,0) default NULL,
   nb_rep3           decimal(10,0) default NULL,
diff --git a/mysql/tables/llx_surveys_questions.sql b/mysql/tables/llx_surveys_questions.sql
index 556af54d386..9a9214eec66 100644
--- a/mysql/tables/llx_surveys_questions.sql
+++ b/mysql/tables/llx_surveys_questions.sql
@@ -16,8 +16,6 @@
 -- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 --
 -- $Id$
--- $Source$
---
 -- ===========================================================================
 
 CREATE TABLE llx_surveys_questions (
diff --git a/mysql/tables/llx_user.sql b/mysql/tables/llx_user.sql
index e5c73b4ee88..d39b53a4702 100644
--- a/mysql/tables/llx_user.sql
+++ b/mysql/tables/llx_user.sql
@@ -18,8 +18,6 @@
 -- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 --
 -- $Id$
--- $Source$
---
 -- ===========================================================================
 
 create table llx_user