EIR Model

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The Entity-Instance-Relationship Model™ is our way of summing up familiar concepts, in a concise way, to help describe an interoperable framework for the semantic web.  We proposed this Entity-Instance-Relationship Model™ to promote semantic interoperability by focusing the conversation on three simple forms that are the components of all assembled information.

 These are the building blocks of the semantic web 

  •   Entity: an unambiguously-described “thing” or “concept”

  •   Entity-Instance:  An association between an entity and an information object or its URI/URL

  •   Entity-Instance-Relationship:  The semantic connections among Entity-Instances

  Entity descriptions are ubiquitous, expressed as Ontology, schema or taxonomy – both simple and complex, as required for the domain spaces or domain segments they described. 


 An Entity-Instance is a connection between an entity description and something on the web.  People are very familiar with Meta-tagging as a way of identifying valid instances of an entity on the internet.  This Entity-Instance connection can also be a virtual association between the Entity and the URI/URL. 

The Entity-Instance-Relationship is the semantic element that closes the gaps.  As an example, think of three separate Entity-Instances that a service company may maintain: a customer instance; a service-type instance; and a service-feature instance.   Entity-Instance-Relationships can be used to build a complex service instance by binding a customer instance with one or more service-type instances and one or more service-feature instances; and on and on.



 That’s all there is - put another way:

"There's only one "I"; but there's lots of "me" around and together they describe who I am. 


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