feat(schema): add schema

close: #1

cubicweb_tuto/schema.py

@@ -16,3 +16,23 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 """cubicweb-tuto schema"""
+from yams.buildobjs import EntityType, String, Float, SubjectRelation, Int
+
+
+class Museum(EntityType):
+    name = String()
+    latitude = Float()
+    longitude = Float()
+    is_in = SubjectRelation("City", cardinality="1*")
+    director = SubjectRelation("Person", cardinality="**")
+    postal_address = String()
+
+
+class City(EntityType):
+    name = String()
+    zip_code = Int()
+
+
+class Person(EntityType):
+    name = String()
+    email = String()