<?xml version="1.0" encoding="UTF-8"?>
<!--
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ERmodel_v1.2/instances/catalogue/src/conceptualModels/2RegularHypergraph.xml 
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Copyright 2016, 2107 Cyprotex Discovery Ltd.

This file is part of the the ERmodel suite of models and transforms.

The ERmodel suite is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-->
<entity_model xmlns="http://www.entitymodelling.org/ERmodel">
   <presentation>
      <diagram>
         <deltah>0.5</deltah>
      </diagram>
   </presentation>
   <entity_type>
      <name>department</name>
      <presentation>
         <x>3.0</x>
         <y>0.1</y>
         <deltaw>0.2</deltaw>
      </presentation>
      <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
         <name>departmentId</name>
         <type>
            <string/>
         </type>
         <identifying/>
      </attribute>
      <composition>
         <id>D1</id>
         <type>student</type>
         <cardinality>
            <OneOrMore/>
         </cardinality>
         <identifying/>
         <inverse>within</inverse>
         <diagram>
            <path>
               <inverse>
                  <label>
                     <position>
                        <Left/>
                     </position>
                  </label>
               </inverse>
            </path>
         </diagram>
      </composition>
      <composition>
         <id>D2</id>
         <type>professor</type>
         <cardinality>
            <OneOrMore/>
         </cardinality>
         <identifying/>
         <inverse>within</inverse>
         <diagram>
            <path/>
         </diagram>
      </composition>
   </entity_type>
   <group>
      <presentation>
         <below>department</below>
         <y>0.9</y>
      </presentation>
      <entity_type>
         <name>student</name>
         <dependency>
            <name>within</name>
         </dependency>
         <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
            <name>departmentId</name>
            <type>
               <string/>
            </type>
            <identifying/>
            <implementationOf>
               <rel>within</rel>
               <origin>departmentId</origin>
               <destattr>departmentId</destattr>
            </implementationOf>
            
         </attribute>
         <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
            <name>studentNoInDept</name>
            <type>
               <string/>
            </type>
            <identifying/>
         </attribute>
         <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
            <name>advisiorDeptId</name>
            <type>
               <string/>
            </type>
         <implementationOf>
               <rel>advised_by</rel>
               <origin>departmentId</origin>
               <destattr>departmentId</destattr>
            </implementationOf>
         </attribute>
         <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
            <name>advisorNo</name>
            <type>
               <string/>
            </type>
             <implementationOf>
               <rel>advised_by</rel>
               <origin>profNoInDept</origin>
               <destattr>profNoInDept</destattr>
            </implementationOf>        
         </attribute>
         <reference>
            <name>advised_by</name>
            <type>professor</type>
            <id>R1</id>
            <cardinality>
               <ExactlyOne/>
            </cardinality>
            <diagram>
               <path>
                  <align>
                     <ToSrc/>
                  </align>
                  <label>
                     <name>
                        <Split/>
                     </name>
                     <position>
                        <Upside/>
                     </position>
                  </label>
                  <id>
                     <label>
                        <position>
                           <Downside/>
                        </position>
                     </label>
                  </id>
               </path>
            </diagram>
         </reference>
         <presentation>
            <name>
               <Split/>
            </name>
            <deltaw>0.2</deltaw>
         </presentation>
      </entity_type>
      <entity_type>
         <name>professor</name>
         <presentation>
            <rightOf>student</rightOf>
            <x>1.5</x>
            <deltaw>0.2</deltaw>
         </presentation>
         <dependency>
            <name>within</name>
         </dependency>
         <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
            <name>departmentId</name>
            <type>
               <string/>
            </type>
            <identifying/>
            <implementationOf>
               <rel>within</rel>
               <origin>departmentId</origin>
               <destattr>departmentId</destattr>
            </implementationOf>
         </attribute>
         <attribute xmlns:era="http://www.entitymodelling.org/ERmodel">
            <name>profNoInDept</name>
            <type>
               <string/>
            </type>
            <identifying/>
         </attribute>
      </entity_type>
   </group>
</entity_model>
