<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

	<xs:complexType name="elementWithID">

					<xs:attribute ref="id"/>

	</xs:complexType>

					<xs:complexType name="bookTmp">

									<xs:complexContent>

													<xs:extension base="elementWithID">

			<xs:sequence>

				<xs:element ref="isbn"/>

				<xs:element ref="title"/>

				<xs:element ref="author" minOccurs="0" maxOccurs="unbounded"/>

				<xs:element ref="character" minOccurs="0" maxOccurs="unbounded"/>

			</xs:sequence>

			<xs:attribute ref="available"/>

													</xs:extension>

									</xs:complexContent>

		</xs:complexType>

	<xs:complexType name="personType">

					<xs:complexContent>

									<xs:extension base="elementWithID">

			<xs:sequence>

				<xs:element ref="name"/>

				<xs:element ref="born"/>

				<xs:element ref="dead" minOccurs="0"/>

				<xs:element ref="qualification"  minOccurs="0"/>

			</xs:sequence>

									</xs:extension>

					</xs:complexContent>

		</xs:complexType>

</xs:schema>