Fields.ecschema.xml

<?xml version="1.0" encoding="UTF-8"?>
<ECSchema schemaName="Fields" alias="MyFields" version="01.00.00" xmlns="http://www.bentley.com/schemas/Bentley.ECXML.3.1" description="A schema for classifying types of fields">
  <ECEntityClass typeName="RedField" displayLabel="Red Field Label" modifier="Sealed"/>
  <ECEntityClass typeName="GreenField" displayLabel="Green Field Label">
    <ECProperty propertyName="Description" typeName="string" description="Description of the field"/>
    <ECProperty propertyName="Data" typeName="binary" description="Encoded field properties"/>
  </ECEntityClass>
  <ECRelationshipClass typeName="RedFieldHasNeighborGreenField" strength="referencing" strengthDirection="forward" modifier="None">
    <Source multiplicity="(1..1)" roleLabel="has neighbor" polymorphic="true">
      <Class class="RedField"/>
    </Source>
    <Target multiplicity="(0..1)" roleLabel="is a neighbor of" polymorphic="true">
      <Class class="GreenField"/>
    </Target>
  </ECRelationshipClass>
</ECSchema>