--- a/doc/book/en/03-00-definition-schema.en.txt	Fri Nov 21 17:37:27 2008 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,20 +0,0 @@
-.. -*- coding: utf-8 -*-
-
-Data Model definition (*schema*)
-================================
-
-The schema is the main concept of `LAX` applications as it defines the
-data model we will handle. It is based on entities types already defined
-in the library and others, more specific, we would expect to find in one or
-more Python files under the `schema` directory.
-
-It is important to make clear the difference between relation type and relation
-definition: a relation type is only a relation name with potentially other
-additionnal properties (see XXXX), whereas a relation definition is a complete
-triplet "<subject entity type> <relation type> <object entity type>". A relation
-type could have been implied if none is related to a relation definition of the
-schema.
-
-
-.. include:: 03-10-stdlib-schemas.en.txt
-.. include:: 03-11-definition-schema.en.txt