<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
        xmlns:mus="http://mediamart.com/music"
        targetNamespace="http://mediamart.com/music">
		
<xs:simpleType name="genre">
  <xs:restriction base="xsd:string">
   <xs:pattern value="Rock" />
   <xs:pattern value="Classical" />
   <xs:pattern value="Opera" />
   <xs:pattern value="Jazz" />
   <xs:pattern value="Blues" />
   <xs:pattern value="Rap" />
   <xs:pattern value="Pop" />
  </xs:restriction>
 </xs:simpleType>
 
 <xs:simpleType name="format">
  <xs:restriction base="xsd:string">
   <xs:enumeration value="Cassette" />
   <xs:enumeration value="CD" />
  </xs:restriction>
 </xs:simpleType>
 
 
<xs:element name="music">
 <xs:complexType>
  <xs:sequence>
   <xs:element name="album" minOccurs="1" maxOccurs="unbounded">
   <xs:complexType>
    <xs:sequence>
  	  <xs:element name="artist" type="xs:string"/>
      <xs:element name="title" type="xs:string"/>
      <xs:element name="price" type="xs:decimal"/>
     </xs:sequence>
	 <xs:simpleContent>
	   <xs:extension base="xsd:string">
        <xs:attribute name="genre" type="xs:string" use="required"/>
	   </xs:extension>
	 </xs:simpleContent>
	 <xs:simpleContent>
	  <xs:extension base="xsd:string">
        <xs:attribute name="format" type="xs:string" use="required"/>
	  </xs:extension>
	 </xs:simpleContent> 
  </xs:complexType>
 </xs:element>

	 

 </xs:sequence>
  </xs:complexType>  
 </xs:element>
 </xs:schema>