-from nominatim_core.config import Configuration
-from nominatim_core.db.connection import connect, Connection
-from nominatim_core.db import properties
-from nominatim_core.errors import UsageError
+from ..config import Configuration
+from ..db.connection import connect, Connection, server_version_tuple, \
+ index_exists, table_exists, execute_scalar
+from ..db import properties
+from ..errors import UsageError