diff --git a/web/pgadmin/browser/collection.py b/web/pgadmin/browser/collection.py
index faa291096..c7d3fa76b 100644
--- a/web/pgadmin/browser/collection.py
+++ b/web/pgadmin/browser/collection.py
@@ -11,9 +11,9 @@ import six
 from abc import ABCMeta, abstractmethod
 from flask import url_for, render_template
 from flask.ext.babel import gettext
-from pgadmin.browser.utils import PgAdminModule, PGChildModule
+from pgadmin.utils import PgAdminModule
+from pgadmin.browser.utils import PGChildModule
 from pgadmin.browser import BrowserPluginModule
-from pgadmin.browser.utils import PGChildNodeView
 
 @six.add_metaclass(ABCMeta)
 class CollectionNodeModule(PgAdminModule, PGChildModule):
@@ -25,11 +25,14 @@ class CollectionNodeModule(PgAdminModule, PGChildModule):
     def __init__(self, import_name, **kwargs):
         kwargs.setdefault("url_prefix", self.node_path)
         kwargs.setdefault("static_url_path", '/static')
-        super(CollectionNodeModule, self).__init__(
-                                            "NODE-%s" % self.node_type,
-                                            import_name,
-                                            **kwargs
-                                            )
+
+        PgAdminModule.__init__(
+            self,
+            "NODE-%s" % self.node_type,
+            import_name,
+            **kwargs
+            )
+        PGChildModule.__init__(self)
 
     @property
     def jssnippets(self):
diff --git a/web/pgadmin/browser/utils.py b/web/pgadmin/browser/utils.py
index 408003b14..ab2eecd3f 100644
--- a/web/pgadmin/browser/utils.py
+++ b/web/pgadmin/browser/utils.py
@@ -9,16 +9,14 @@
 
 """Browser helper utilities"""
 
-from abc import ABCMeta, abstractmethod, abstractproperty
-from collections import OrderedDict
+from abc import ABCMeta, abstractmethod
 import flask
 from flask.views import View, MethodViewType, with_metaclass
 from flask.ext.babel import gettext
 import six
 
 from config import PG_DEFAULT_DRIVER
-from pgadmin.browser import PgAdminModule
-from pgadmin.utils.ajax import make_json_response
+from pgadmin.utils.ajax import make_json_response, precondition_required
 
 @six.add_metaclass(ABCMeta)
 class NodeAttr(object):
@@ -34,7 +32,7 @@ class NodeAttr(object):
         pass
 
 
-class PGChildModule:
+class PGChildModule(object):
     """
     class PGChildModule
 
@@ -55,15 +53,14 @@ class PGChildModule:
     """
 
     def __init__(self, *args, **kwargs):
-        self.min_ver = 1000000000
-        self.max_ver = 0
+        self.min_ver = 0
+        self.max_ver = 1000000000
         self.server_type = None
-        self.attributes = {}
 
         super(PGChildModule, self).__init__(*args, **kwargs)
 
-    def BackendSupported(self, mangaer, **kwargs):
-        sversion = getattr(mangaer, 'sversion', None)
+    def BackendSupported(self, manager, **kwargs):
+        sversion = getattr(manager, 'sversion', None)
         if (sversion is None or not isinstance(sversion, int)):
             return False
 
@@ -85,33 +82,6 @@ class PGChildModule:
     def get_nodes(self, sid=None, **kwargs):
         pass
 
-    def AddAttr(self, attr):
-        assert(isinstance(attr, PGNodeAttr))
-
-        name = getattr(attr, 'name', None)
-        assert(name is not None and isinstance(name, str))
-        assert(name not in self.attributes)
-        # TODO:: Check for naming convention
-
-        min_ver = getattr(attr, 'min_ver', None)
-        assert(min_ver is None or isinstance(min_ver, int))
-
-        max_ver = getattr(attr, 'max_ver', None)
-        assert(max_ver is None or isinstance(max_ver, int))
-
-        self.attributes[name] = attr
-
-        if max_ver is None:
-            self.max_ver = None
-        elif self.max_var is not None and self.max_ver < max_ver:
-            self.max_ver < max_ver
-
-        if min_ver is None:
-            self.min_ver = None
-        elif self.min_ver is not None and self.min_ver > min_ver:
-            self.min_ver = min_ver
-
-
 class NodeView(with_metaclass(MethodViewType, View)):
     """
     A PostgreSQL Object has so many operaions/functions apart from CRUD