<?xml version="1.0" encoding="UTF-8"?>
<!ELEMENT ERModel (Entities, Relationships)>
<!ATTLIST ERModel
	Name CDATA #REQUIRED
>
<!ELEMENT Entities (Entity*)>
<!ELEMENT Relationships (Relationship*)>
<!ELEMENT Entity (Attribute+)>
<!ATTLIST Entity
	Name CDATA #REQUIRED
>
<!ELEMENT Relationship (Entity1, Entity2)>
<!ATTLIST Relationship
	Name CDATA #REQUIRED
	Type (OneToOne | OneToMany | ManyToMany) #REQUIRED
>
<!ELEMENT Entity1 (Attribute+)>
<!ATTLIST Entity1
	Name CDATA #REQUIRED
>
<!ELEMENT Entity2 (Attribute+)>
<!ATTLIST Entity2
	Name CDATA #REQUIRED
>
<!ELEMENT Attribute (#PCDATA)>
<!ATTLIST Attribute
	Key (TRUE | FALSE) "FALSE"
>