--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/book/devrepo/datamodel/index.rst	Thu Jan 08 22:11:06 2015 +0100
@@ -0,0 +1,12 @@
+Data model
+==========
+
+This chapter describes how you define a schema and how to make it evolves as the time goes.
+
+.. toctree::
+   :maxdepth: 1
+
+   definition
+   metadata
+   baseschema
+   define-workflows