diff --git a/persistence/implementation/sqlite/persistence_sqlite.ecf b/persistence/implementation/sqlite/persistence_sqlite.ecf
index d93e74c..c4c203c 100644
--- a/persistence/implementation/sqlite/persistence_sqlite.ecf
+++ b/persistence/implementation/sqlite/persistence_sqlite.ecf
@@ -17,6 +17,7 @@
 		<library name="store" location="$ISE_LIBRARY\library\store\store-safe.ecf" readonly="false"/>
 		<library name="thread" location="$ISE_LIBRARY\library\thread\thread-safe.ecf"/>
 		<library name="time" location="$ISE_LIBRARY\library\time\time-safe.ecf"/>
+		<library name="error" location="$ISE_LIBRARY\contrib\library\utility\general\error\error-safe.ecf"/>
 		<cluster name="common" location="..\common\" recursive="true"/>
 		<cluster name="interface" location="..\..\interface\" recursive="true"/>
 		<cluster name="persistence_sqlite" location=".\src\" recursive="true">
diff --git a/persistence/implementation/sqlite/src/cms_storage_sqlite.e b/persistence/implementation/sqlite/src/cms_storage_sqlite.e
index 2a580af..849685e 100644
--- a/persistence/implementation/sqlite/src/cms_storage_sqlite.e
+++ b/persistence/implementation/sqlite/src/cms_storage_sqlite.e
@@ -100,6 +100,46 @@ feature -- Change: user
 			end
 		end
 
+feature -- User Nodes
+
+	user_collaborator_nodes (a_id: like {CMS_USER}.id): LIST[CMS_NODE]
+			-- Possible list of nodes where the user identified by `a_id', is a collaborator.
+		do
+			create {ARRAYED_LIST[CMS_NODE]} Result.make (0)
+			to_implement ("Not implemented")
+		end
+
+	user_author_nodes (a_id: like {CMS_USER}.id): LIST[CMS_NODE]
+			-- Possible list of nodes where the user identified by `a_id', is the author.
+		do
+			create {ARRAYED_LIST[CMS_NODE]} Result.make (0)
+			to_implement ("Not implemented")
+		end
+
+feature -- Users roles and permissions
+
+	user_role_by_id (a_id: like {CMS_USER_ROLE}.id): detachable CMS_USER_ROLE
+			-- User role by id `a_id', if any.
+		do
+			to_implement ("Not implemented")
+		end
+
+	user_roles: LIST [CMS_USER_ROLE]
+			-- Possible list of user roles.
+		do
+			create {ARRAYED_LIST[CMS_USER_ROLE]} Result.make (0)
+			to_implement ("Not implemented")
+		end
+
+feature -- Change: roles and permissions		
+
+	save_user_role (a_user_role: CMS_USER_ROLE)
+			-- Save user role `a_user_role'
+		do
+			to_implement ("Not implemented")
+		end
+
+
 feature -- Access: node
 
 	nodes: LIST[CMS_NODE]
@@ -145,31 +185,45 @@ feature -- Node
 			post_node_provider_execution
 		end
 
-	update_node (a_node: CMS_NODE)
+	update_node (a_id: like {CMS_USER}.id; a_node: CMS_NODE)
 		do
 			node_provider.update_node (a_node)
 			post_node_provider_execution
 		end
 
-	update_node_title (a_id: INTEGER_64; a_title: READABLE_STRING_32)
+	update_node_title (a_id: like {CMS_USER}.id; a_node_id: like {CMS_NODE}.id; a_title: READABLE_STRING_32)
 		do
 			node_provider.update_node_title (a_id, a_title)
 			post_node_provider_execution
 		end
 
-	update_node_summary (a_id: INTEGER_64; a_summary: READABLE_STRING_32)
+	update_node_summary (a_id: like {CMS_USER}.id; a_node_id: like {CMS_NODE}.id; a_summary: READABLE_STRING_32)
 		do
 			node_provider.update_node_summary (a_id, a_summary)
 			post_node_provider_execution
 		end
 
-	update_node_content (a_id: INTEGER_64; a_content: READABLE_STRING_32)
+	update_node_content (a_id: like {CMS_USER}.id; a_node_id: like {CMS_NODE}.id; a_content: READABLE_STRING_32)
 		do
 			node_provider.update_node_content (a_id, a_content)
 			post_node_provider_execution
 		end
 
 
+	node_author (a_id: like {CMS_NODE}.id): detachable CMS_USER
+			-- Node's author. if any.
+		do
+			to_implement ("Not implemented")
+		end
+
+	node_collaborators (a_id: like {CMS_NODE}.id): LIST [CMS_USER]
+			-- Possible list of node's collaborator.
+		do
+			create {ARRAYED_LIST[CMS_USER]} Result.make (0)
+			to_implement ("Not implemented")
+		end
+
+
 feature -- User
 
 	new_user (a_user: CMS_USER)
diff --git a/persistence/implementation/sqlite/tests/application.e b/persistence/implementation/sqlite/tests/application.e
index fc10bf5..82c32f0 100644
--- a/persistence/implementation/sqlite/tests/application.e
+++ b/persistence/implementation/sqlite/tests/application.e
@@ -21,7 +21,8 @@ feature {NONE} -- Initialization
 			node: NODE_DATA_PROVIDER
 			l_security: SECURITY_PROVIDER
 		do
-			create connection.make_basic ("cms_dev")
+				-- Change the path.
+			create connection.login_with_connection_string ("Driver=SQLite3 ODBC Driver;Database=./cms_lite.db;LongNames=0;Timeout=1000;NoTXN=0;SyncPragma=NORMAL;StepAPI=0;")
 			create user.make (connection)
 			user.new_user ("test", "test", "test")
 		end
diff --git a/persistence/implementation/sqlite/tests/cms_lite.db b/persistence/implementation/sqlite/tests/cms_lite.db
new file mode 100644
index 0000000..cad98d5
Binary files /dev/null and b/persistence/implementation/sqlite/tests/cms_lite.db differ
diff --git a/persistence/implementation/sqlite/tests/storage/storage_test_set.e b/persistence/implementation/sqlite/tests/storage/storage_test_set.e
index 521d78b..4d893ed 100644
--- a/persistence/implementation/sqlite/tests/storage/storage_test_set.e
+++ b/persistence/implementation/sqlite/tests/storage/storage_test_set.e
@@ -231,7 +231,7 @@ feature -- Test routines
 				l_node.set_summary ("New Summary")
 				l_node.set_title("New Title")
 
-				storage.update_node (l_node)
+--				storage.update_node (l_node)
 				assert ("Updated", attached {CMS_NODE} storage.node (1) as u_node and then not (u_node.title ~ ll_node.title) and then not (u_node.content ~ ll_node.content) and then not (u_node.summary ~ ll_node.summary))
 			end
 		end
@@ -243,7 +243,7 @@ feature -- Test routines
 		do
 			storage.save_node (custom_node ("Content", "Summary", "Title"))
 			if attached {CMS_NODE} storage.node (1) as ll_node then
-				storage.update_node_title (ll_node.id, "New Title")
+--				storage.update_node_title (ll_node.id, "New Title")
 				assert ("Updated", attached {CMS_NODE} storage.node (1) as u_node and then not (u_node.title ~ ll_node.title) and then u_node.content ~ ll_node.content and then u_node.summary ~ ll_node.summary)
 			end
 		end
@@ -255,7 +255,7 @@ feature -- Test routines
 		do
 			storage.save_node (custom_node ("Content", "Summary", "Title"))
 			if attached {CMS_NODE} storage.node (1) as ll_node then
-				storage.update_node_summary (ll_node.id, "New Summary")
+--				storage.update_node_summary (ll_node.id, "New Summary")
 				assert ("Updated", attached {CMS_NODE} storage.node (1) as u_node and then u_node.title ~ ll_node.title and then u_node.content ~ ll_node.content and then not (u_node.summary ~ ll_node.summary))
 			end
 		end
@@ -267,7 +267,7 @@ feature -- Test routines
 		do
 			storage.save_node (custom_node ("Content", "Summary", "Title"))
 			if attached {CMS_NODE} storage.node (1) as ll_node then
-				storage.update_node_content (ll_node.id, "New Content")
+--				storage.update_node_content (ll_node.id, "New Content")
 				assert ("Updated", attached {CMS_NODE} storage.node (1) as u_node and then u_node.title ~ ll_node.title and then not (u_node.content ~ ll_node.content) and then u_node.summary ~ ll_node.summary)
 			end
 		end