Index: branches/5.1.x/core/install/install_schema.sql
===================================================================
diff -u -r13890 -r13951
--- branches/5.1.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 13890)
+++ branches/5.1.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 13951)
@@ -398,7 +398,7 @@
 
 CREATE TABLE Category (
   CategoryId int(11) NOT NULL AUTO_INCREMENT,
-  `Type` int(11) NOT NULL DEFAULT '0',
+  `Type` int(11) NOT NULL DEFAULT '1',
   SymLinkCategoryId int(10) unsigned DEFAULT NULL,
   ParentId int(11) NOT NULL DEFAULT '0',
   `Name` varchar(255) NOT NULL DEFAULT '',
@@ -458,7 +458,7 @@
   MetaTitle text,
   IndexTools text,
   IsMenu tinyint(4) NOT NULL DEFAULT '1',
-  IsSystem tinyint(4) NOT NULL DEFAULT '0',
+  Protected tinyint(4) NOT NULL DEFAULT '0',
   FormId int(11) DEFAULT NULL,
   FormSubmittedTemplate varchar(255) DEFAULT NULL,
   FriendlyURL varchar(255) NOT NULL DEFAULT '',
@@ -493,7 +493,8 @@
   KEY ThemeId (ThemeId),
   KEY EnablePageCache (EnablePageCache),
   KEY OverridePageCacheKey (OverridePageCacheKey),
-  KEY PageExpiration (PageExpiration)
+  KEY PageExpiration (PageExpiration),
+  KEY Protected (Protected)
 );
 
 CREATE TABLE CategoryCustomData (
