<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
	<xs:element name="Attribute">
		<xs:complexType>
			<xs:simpleContent>
				<xs:extension base="xs:string">
					<xs:attribute name="Key" default="FALSE">
						<xs:simpleType>
							<xs:restriction base="xs:NMTOKEN">
								<xs:enumeration value="TRUE"/>
								<xs:enumeration value="FALSE"/>
							</xs:restriction>
						</xs:simpleType>
					</xs:attribute>
				</xs:extension>
			</xs:simpleContent>
		</xs:complexType>
	</xs:element>
	<xs:element name="ERModel">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Entities"/>
				<xs:element ref="Relationships"/>
			</xs:sequence>
			<xs:attribute name="Name" type="xs:string" use="required"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Entities">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Entity" minOccurs="0" maxOccurs="unbounded"/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	<xs:element name="Entity">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Attribute" maxOccurs="unbounded"/>
			</xs:sequence>
			<xs:attribute name="Name" type="xs:string" use="required"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Entity1">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Attribute" maxOccurs="unbounded"/>
			</xs:sequence>
			<xs:attribute name="Name" type="xs:string" use="required"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Entity2">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Attribute" maxOccurs="unbounded"/>
			</xs:sequence>
			<xs:attribute name="Name" type="xs:string" use="required"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Relationship">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Entity1"/>
				<xs:element ref="Entity2"/>
			</xs:sequence>
			<xs:attribute name="Name" type="xs:string" use="required"/>
			<xs:attribute name="Type" use="required">
				<xs:simpleType>
					<xs:restriction base="xs:NMTOKEN">
						<xs:enumeration value="OneToOne"/>
						<xs:enumeration value="OneToMany"/>
						<xs:enumeration value="ManyToMany"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
		</xs:complexType>
	</xs:element>
	<xs:element name="Relationships">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Relationship" minOccurs="0" maxOccurs="unbounded"/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
</xs:schema>