--- /dev/null
+---------- creations
+
+ALTER TABLE slice_attribute ADD nodegroup_id integer REFERENCES nodegroups;
+
+CREATE INDEX slice_attribute_nodegroup_id_idx ON slice_attribute (nodegroup_id);
+
+---------- view changes
+
+DROP VIEW view_slice_attributes;
+
+CREATE OR REPLACE VIEW view_slice_attributes AS
+SELECT
+slice_attribute.slice_attribute_id,
+slice_attribute.slice_id,
+slice_attribute.node_id,
+slice_attribute.nodegroup_id,
+slice_attribute_types.attribute_type_id,
+slice_attribute_types.name,
+slice_attribute_types.description,
+slice_attribute_types.min_role_id,
+slice_attribute.value
+FROM slice_attribute
+INNER JOIN slice_attribute_types USING (attribute_type_id);
+
+
+---------- bump subversion
+
+UPDATE plc_db_version SET subversion = 6;
+SELECT subversion from plc_db_version;