Changes
/* Relating objects */
{{UMM|Managing the control relation in the metamodel requires to introduce a relation block „CONTROL“ with two metaproperties „Armature#“ and „Pump#“.}}
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Lets have a closer look at the characteristics of the two methods relating objects:
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<td align="center"><b>Cardinality 1 : n</b></td>
<td align="center"><b>Cardinality n : n</b></td>
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===Entity Relationship Model (ER model)===