diff --git a/htdocs/install/mysql/migration/5.0.0-6.0.0.sql b/htdocs/install/mysql/migration/5.0.0-6.0.0.sql
index 99a00b033c6..fc4bdceb149 100644
--- a/htdocs/install/mysql/migration/5.0.0-6.0.0.sql
+++ b/htdocs/install/mysql/migration/5.0.0-6.0.0.sql
@@ -24,6 +24,19 @@
 -- -- VPGSQL8.2 DELETE FROM llx_usergroup_user      WHERE fk_user      NOT IN (SELECT rowid from llx_user);
 -- -- VMYSQL4.1 DELETE FROM llx_usergroup_user      WHERE fk_usergroup NOT IN (SELECT rowid from llx_usergroup);
 
+
+create table llx_notify_def_object
+(
+  id				integer AUTO_INCREMENT PRIMARY KEY,
+  entity			integer DEFAULT 1 NOT NULL,		-- multi company id
+  objet_type		varchar(16),					-- 'actioncomm'
+  objet_id			integer NOT NULL,				-- id of parent key
+  type_notif		varchar(16) DEFAULT 'browser',	-- 'browser', 'email', 'sms', 'webservice', ...
+  date_notif		datetime,						-- date notification
+  user_id			integer,						-- notification is for this user
+  moreparam			varchar(255)
+)ENGINE=innodb;
+
 ALTER TABLE llx_facturedet_rec ADD COLUMN vat_src_code varchar(10) DEFAULT '' AFTER tva_tx;
 
 ALTER TABLE llx_extrafields ADD COLUMN langs varchar(24);
diff --git a/htdocs/install/mysql/tables/llx_actioncomm.sql b/htdocs/install/mysql/tables/llx_actioncomm.sql
index 46017d1e739..4849aacb690 100644
--- a/htdocs/install/mysql/tables/llx_actioncomm.sql
+++ b/htdocs/install/mysql/tables/llx_actioncomm.sql
@@ -64,7 +64,7 @@ create table llx_actioncomm
   email_tobcc		varchar(256),					-- when event was an email, we store here the email_tobcc
   errors_to			varchar(256),					-- when event was an email, we store here the erros_to
   
-  recurid           varchar(128),                   -- used to store event id to link each other all the repeating event records  
+  recurid           varchar(128),                   -- used to store event id to link each other all the repeating event record
   recurrule         varchar(128),					-- contains string with ical format recurring rule like "FREQ=MONTHLY;INTERVAL=2;BYMONTHDAY=19" or "FREQ=WEEKLY;BYDAY=MO"
   recurdateend      datetime,						-- no more recurring event after this date
      
diff --git a/htdocs/install/mysql/tables/llx_notify.sql b/htdocs/install/mysql/tables/llx_notify.sql
index f595dc7c126..b0fa333dbb9 100644
--- a/htdocs/install/mysql/tables/llx_notify.sql
+++ b/htdocs/install/mysql/tables/llx_notify.sql
@@ -16,6 +16,7 @@
 -- You should have received a copy of the GNU General Public License
 -- along with this program. If not, see <http://www.gnu.org/licenses/>.
 --
+-- Table of notification done
 -- ===================================================================
 
 create table llx_notify
diff --git a/htdocs/install/mysql/tables/llx_notify_def.sql b/htdocs/install/mysql/tables/llx_notify_def.sql
index a3fc123c8dd..3641e8cd2e7 100644
--- a/htdocs/install/mysql/tables/llx_notify_def.sql
+++ b/htdocs/install/mysql/tables/llx_notify_def.sql
@@ -15,16 +15,17 @@
 -- You should have received a copy of the GNU General Public License
 -- along with this program. If not, see <http://www.gnu.org/licenses/>.
 --
+-- Table to declare permanent notifications (per workflow event)
 -- ===================================================================
 
 create table llx_notify_def
 (
   rowid           integer AUTO_INCREMENT PRIMARY KEY,
   tms             timestamp,
-  datec           date,             -- date de creation
+  datec           date,             			-- date de creation
   fk_action       integer NOT NULL,
   fk_soc          integer,
   fk_contact      integer,
   fk_user		  integer,
-  type            varchar(16) DEFAULT 'email'
+  type            varchar(16) DEFAULT 'email'	-- 'browser', 'email', 'sms', 'webservice', ...
 )ENGINE=innodb;
diff --git a/htdocs/install/mysql/tables/llx_notify_def_object.sql b/htdocs/install/mysql/tables/llx_notify_def_object.sql
new file mode 100644
index 00000000000..d1ddd2d1b99
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_notify_def_object.sql
@@ -0,0 +1,30 @@
+-- ========================================================================
+-- Copyright (C) 2017 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 3 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, see <http://www.gnu.org/licenses/>.
+--
+-- Table to declare notifications (per object)
+-- ========================================================================
+
+create table llx_notify_def_object
+(
+  id				integer AUTO_INCREMENT PRIMARY KEY,
+  entity			integer DEFAULT 1 NOT NULL,		-- multi company id
+  objet_type		varchar(16),					-- 'actioncomm'
+  objet_id			integer NOT NULL,				-- id of parent key
+  type_notif		varchar(16) DEFAULT 'browser',	-- 'browser', 'email', 'sms', 'webservice', ...
+  date_notif		datetime,						-- date notification
+  user_id			integer,						-- notification is for this user
+  moreparam			varchar(255)
+)ENGINE=innodb;