diff --git a/omnipath_metabo/schema/_main.py b/omnipath_metabo/schema/_main.py
new file mode 100644
index 0000000..17370e8
--- /dev/null
+++ b/omnipath_metabo/schema/_main.py
@@ -0,0 +1,11 @@
+from sqlalchemy.ext.declarative import declarative_base
+
+
+__all__ = ['Base']
+
+Base = declarative_base()
+
+
+def create(con):
+
+    Base.metadata.create_all(con.engine)