add files

temp/exificient/data/schema/mixed.xsd

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  
+  <xs:element name="letter" type="lettertype"/>
+  
+  <xs:complexType name="lettertype" mixed="true">
+    <xs:sequence>
+      <xs:element name="name" type="xs:string"/>
+      <xs:element name="orderid" type="xs:positiveInteger"/>
+      <xs:element name="shipdate" type="xs:date"/>
+    </xs:sequence>
+  </xs:complexType>
+
+</xs:schema>