inventory_system.xsd

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<?xml version="1.0" encoding="gb2312"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="x-schema:Inventory_System.xsd" targetNamespace="x-schema:Inventory_System.xsd" elementFormDefault="qualified">
	<xs:element name="Available" type="xs:string"/>
	<xs:element name="Book">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Name"/>
				<xs:element ref="Price"/>
				<xs:choice maxOccurs="1">
					<xs:element ref="Quantity" minOccurs="0"/>
					<xs:element ref="Available" minOccurs="0"/>
				</xs:choice>
			</xs:sequence>
			<xs:attribute name="isbn" use="required" type="xs:string"/>
			<xs:attribute name="inStock" use="required">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:enumeration value="No"/>
						<xs:enumeration value="Yes"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
		</xs:complexType>
	</xs:element>
	<xs:element name="Inventory">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Book" maxOccurs="unbounded"/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	<xs:element name="Name" type="xs:string"/>
	<xs:element name="Price" type="xs:string"/>
	<xs:element name="Quantity" type="xs:int"/>
</xs:schema>