diff --git a/bigchaindb/backend/connection.py b/bigchaindb/backend/connection.py
index 0ac5cd17..01a51e28 100644
--- a/bigchaindb/backend/connection.py
+++ b/bigchaindb/backend/connection.py
@@ -39,4 +39,6 @@ def connect(backend=None, host=None, port=None, name=None):
 
 
 class Connection:
-    pass
+
+    def run(self, query):
+        raise NotImplementedError()