--- a/doc/book/en/B0010-define-schema.en.txt	Tue May 05 17:18:49 2009 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,23 +0,0 @@
-.. -*- coding: utf-8 -*-
-
-Data model definition: the *schema*
-===================================
-
-The **schema** is the core piece of a `CubicWeb` application as it defines
-the handled data model. It is based on entity types that are either already
-defined in the `CubicWeb` standard library; or more specific types, that 
-`CubicWeb` expects to find in one or more Python files under the directory 
-`schema`.
-
-At this point, 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:: B0011-schema-stdlib.en.txt
-.. include:: B0012-schema-definition.en.txt
-