diff --git a/manila/db/api.py b/manila/db/api.py
index 6c0a483cee..115aa142e0 100644
--- a/manila/db/api.py
+++ b/manila/db/api.py
@@ -337,7 +337,7 @@ def share_instances_get_all_by_share_network(context, share_network_id):
 
 def share_instances_get_all_by_share(context, share_id):
     """Returns list of shares that belong to given share."""
-    return IMPL.share_instances_get_all_by_share_network(context, share_id)
+    return IMPL.share_instances_get_all_by_share(context, share_id)
 
 
 def share_instances_get_all_by_consistency_group_id(context, cg_id):
@@ -393,14 +393,6 @@ def share_get_all_by_consistency_group_id(context, cg_id,
         sort_key=sort_key, sort_dir=sort_dir)
 
 
-def share_get_all_by_share_network(context, share_network_id, filters=None,
-                                   sort_key=None, sort_dir=None):
-    """Returns list of shares that belong to given share network."""
-    return IMPL.share_get_all_by_share_network(
-        context, share_network_id, filters=filters, sort_key=sort_key,
-        sort_dir=sort_dir)
-
-
 def share_get_all_by_share_server(context, share_server_id, filters=None,
                                   sort_key=None, sort_dir=None):
     """Returns all shares with given share server ID."""
@@ -752,20 +744,6 @@ def share_server_get(context, id, session=None):
     return IMPL.share_server_get(context, id, session=session)
 
 
-def share_server_get_by_host(context, host, share_net_id, session=None):
-    """Get share server DB records by host."""
-    return IMPL.share_server_get_by_host(context, host, share_net_id,
-                                         session=session)
-
-
-def share_server_get_by_host_and_share_net(context, host, share_net_id,
-                                           session=None):
-    """Get share server DB records by host and share net."""
-    return IMPL.share_server_get_by_host_and_share_net(context, host,
-                                                       share_net_id,
-                                                       session=session)
-
-
 def share_server_get_all_by_host_and_share_net_valid(context, host,
                                                      share_net_id,
                                                      session=None):
@@ -854,11 +832,6 @@ def share_type_access_remove(context, type_id, project_id):
     return IMPL.share_type_access_remove(context, type_id, project_id)
 
 
-def share_type_qos_specs_get(context, type_id):
-    """Get all qos specs for given share type."""
-    return IMPL.share_type_qos_specs_get(context, type_id)
-
-
 def share_type_destroy(context, id):
     """Delete a share type."""
     return IMPL.share_type_destroy(context, id)
diff --git a/manila/tests/db/test_api.py b/manila/tests/db/test_api.py
new file mode 100644
index 0000000000..b0148dc416
--- /dev/null
+++ b/manila/tests/db/test_api.py
@@ -0,0 +1,54 @@
+# Copyright (c) Goutham Pacha Ravi.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+"""Unit Tests for the interface methods in the manila/db/api.py."""
+
+import re
+
+from manila.db import api as db_interface
+from manila.db.sqlalchemy import api as db_api
+from manila import test
+
+
+class DBInterfaceTestCase(test.TestCase):
+    """Test cases for the DB Interface methods."""
+
+    def setUp(self):
+        super(self.__class__, self).setUp()
+
+    def test_interface_methods(self):
+        """Ensure that implementation methods match interfaces.
+
+        manila/db/api module is merely shim layer between the database
+        implementation and the other methods using these implementations.
+        Bugs are introduced when the shims go out of sync with the actual
+        implementation. So this test ensures that method names and
+        signatures match between the interface and the implementation.
+        """
+        members = dir(db_interface)
+        # Ignore private methods for the file and any other members that
+        # need not match.
+        ignore_members = re.compile(r'^_|CONF|IMPL')
+        interfaces = [i for i in members if not ignore_members.match(i)]
+        for interface in interfaces:
+            method = getattr(db_interface, interface)
+            if callable(method):
+                mock_method_call = self.mock_object(db_api, interface)
+                # kwargs always specify defaults, ignore them in the signature.
+                args = filter(
+                    lambda x: x != 'kwargs', method.__code__.co_varnames)
+
+                method(*args)
+
+                self.assertTrue(mock_method_call.called)