diff --git a/core/trunk/modif_security.sql b/core/trunk/modif_security.sql
new file mode 100644
index 0000000000000000000000000000000000000000..232169a4d4f3bae12311194df187666fb3ead8b4
--- /dev/null
+++ b/core/trunk/modif_security.sql
@@ -0,0 +1,7 @@
+ALTER TABLE "security" ADD COLUMN rights_bitmask integer;
+ALTER TABLE "security" ADD COLUMN mr_start_date timestamp without time zone;
+ALTER TABLE "security" ADD COLUMN mr_stop_date timestamp without time zone;
+ALTER TABLE "security" ADD COLUMN where_target character varying(15) NOT NULL DEFAULT 'DOC';
+ALTER TABLE "security" DROP CONSTRAINT security_pkey;
+ALTER TABLE "security" ADD COLUMN security_id serial NOT NULL;
+ALTER TABLE "security" ADD PRIMARY KEY (security_id);