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| − | == Introduction ==
| + | #REDIRECT [[Entity]] |
| − | This page describes the Higgins concept of [[I-Node]].
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| − | == Definition ==
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| − | * A digital representation of a person, thing or concept.
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| − | * A [[I-Node]] has zero or more [[Attribute]]s
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| − | === Details ===
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| − | * Most [[I-Node]]s have one [[I-NodeId]] [[Attribute]]
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| − | * Some of the [[Attribute]]s of an [[I-Node]] may be [[I-NodeId]] references to other [[I-Node]]s in the same or different [[Context]]s
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| − | * A single person (thing or concept) may be represented as one (or more) [[I-Node]]s in one [[Context]] and (an)other [[I-Node]]s in other [[Context]]s. By linking or "federating" these disparate [[I-Node]]s one can gain a more unified view of a given person. [[Context]]s representing different systems, organizations and entire enterprises with widely varying storage and trust models are handled using this [[I-Node]] linking approach. For example the person "Bob Smith" could be represented as two [[I-Node]]s; the first having "bsmith" as an [[I-NodeId]] and the second having "bob" as a [[I-NodeId]]. These two [[I-Node]]s may be in the same or in different [[Context]]s. To express that the "bsmith" is the same person as "bob" an [[I-Node Correlation]] [[Attribute]] would be added to "bsmith" whose value points to "bob".
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| − | * [[Context]]s can be nested (e.g. enterprises have sub-organizations, and there are systems within an enterprise/org, etc.) or related through other means (employment/HR system vs. customer system where same person is a customer and an employee). Thus linking the [[I-Node]]s relevant to those contexts provides an overall view of an [[I-Node]](or at least a partial "overall" view to those [[Context]]s).
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| − | * The information contained in one [[I-Node]] is not necessarily a pure subset of the union of all of the information contained in all of the linked [[I-Node]]s representing a person taken together. There is no consistency constraint imposed between the [[I-Node]]s of an person. For example, a person could be represented such that their name was Joe in one [[I-Node]] in one [[Context]] and JoAnn in [[I-Node]].
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| − | == HOWL ==
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| − | <pre>
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| − | </pre>
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| − | == See Also ==
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| − | * [[ContextId]]
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| − | * [[I-NodeId]]
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| − | * [[Concepts]]
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| − | ==Links==
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| − | * [http://eclipse.org/higgins Higgins Home]
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