--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+ xmlns:entity="http://www.argeo.org/ns/entity"
+ targetNamespace="http://www.argeo.org/ns/entity">
+
+ <xs:attribute name="date" type="xs:date" />
+</xs:schema>
\ No newline at end of file