diff --git a/install/update-5.2.0/update-sqlite3.sql b/install/update-5.2.0/update-sqlite3.sql
index da6308f09..3fac362bf 100644
--- a/install/update-5.2.0/update-sqlite3.sql
+++ b/install/update-5.2.0/update-sqlite3.sql
@@ -9,16 +9,16 @@ CREATE TABLE `tblAttributeDefinitionGroups` (
 
 CREATE TABLE `tblAttributeDefinitionGroupAttributeDefinition` (
   `attrdef` INTEGER REFERENCES `tblAttributeDefinitions` (`id`) ON DELETE CASCADE,
-  `attrgrp` INTEGER REFERENCES `tblAttributeGroups` (`id`) ON DELETE CASCADE,
-	`sequence` INTEGER,
+  `attrgrp` INTEGER REFERENCES `tblAttributeDefinitionGroups` (`id`) ON DELETE CASCADE,
+  `sequence` double NOT NULL default '0',
 	`show` INTEGER,
   UNIQUE(`attrdef`, `attrgrp`)
 );
 
 CREATE TABLE `tblFolderAttributeDefinitionGroup` (
   `folder` INTEGER REFERENCES `tblFolders` (`id`) ON DELETE CASCADE,
-  `attrgrp` INTEGER REFERENCES `tblAttributeGroups` (`id`) ON DELETE CASCADE,
-	`sequence` INTEGER,
+  `attrgrp` INTEGER REFERENCES `tblAttributeDefinitionGroups` (`id`) ON DELETE CASCADE,
+  `sequence` double NOT NULL default '0',
   UNIQUE(`folder`, `attrgrp`)
 );
 
diff --git a/install/update-5.2.0/update.sql b/install/update-5.2.0/update.sql
new file mode 100644
index 000000000..b84239f59
--- /dev/null
+++ b/install/update-5.2.0/update.sql
@@ -0,0 +1,33 @@
+START TRANSACTION;
+
+CREATE TABLE `tblAttributeDefinitionGroups` (
+  `id` int(11) NOT NULL auto_increment,
+  `name` varchar(100) default NULL,
+  `comment` text,
+  PRIMARY KEY (`id`),
+  UNIQUE(`name`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+CREATE TABLE `tblAttributeDefinitionGroupAttributeDefinition` (
+  `attrdef` int(11),
+  `attrgrp` int(11),
+  `sequence` double NOT NULL default '0',
+	`show` int(11),
+  UNIQUE(`attrdef`, `attrgrp`),
+	CONSTRAINT `tblAttributeDefinitionGroupAttributeDefinition_attrdef` FOREIGN KEY (`attrdef`) REFERENCES `tblAttributeDefinitions` (`id`) ON DELETE CASCADE,
+	CONSTRAINT `tblAttributeDefinitionGroupAttributeDefinition_attrgrp` FOREIGN KEY (`attrgrp`) REFERENCES `tblAttributeDefinitionGroups` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+CREATE TABLE `tblFolderAttributeDefinitionGroup` (
+  `folder` int(11),
+  `attrgrp` int(11),
+  `sequence` double NOT NULL default '0',
+  UNIQUE(`folder`, `attrgrp`),
+	CONSTRAINT `tblFolderAttributeDefinitionGroup_folder` FOREIGN KEY (`folder`) REFERENCES `tblFolders` (`id`) ON DELETE CASCADE,
+	CONSTRAINT `tblFolderAttributeDefinitionGroup_attrgrp` FOREIGN KEY (`attrgrp`) REFERENCES `tblAttributeDefinitionGroups` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+UPDATE tblVersion set major=5, minor=2, subminor=0;
+
+COMMIT;
+