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Difference between revisions of "EntityId"

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{{#eclipseproject:technology.higgins}}
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{{#eclipseproject:technology.higgins|eclipse_custom_style.css}}
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== Version ==
 
== Version ==
This page defines the concept of [[EntityId]] used in the [[Context Data Model 1.1]].
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This page defines the concept of [[EntityId]] used in the [[Context Data Model 2.0]].
  
 
== Definition ==
 
== Definition ==
* An [[EntityId]] is a kind of simple-valued [[Attribute]] of an [[Entity]]
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* Identifies an [[Entity]] within its containing [[Context]].
* The value of an [[EntityId]] is a single [[EntityId Data Range]] [[UDI]]
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* MAY be absolute or relative
* Its value uniquely identifies its associated [[Entity]] instance within its containing [[Context]]
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* An absolute [[EntityId]]
* If the UDI is global, its value uniquely identifies its associated [[Entity]] instance within the [[HGG]]
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** Resolves to one ''authoritative'' [[Entity]]
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** MUST uniquely identify both an [[Context]] and a specific [[Entity]] within it.
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* A relative [[Entity UDI]] MUST uniquely identify an [[Entity]] within the local [[Context]].
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* Is kind of [[UDI]] URI.
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* An [[EntityId]] is a "Resource UDI" as defined in section 4 of [http://www.azigo.com/udi/udi-syntax.html UDI Syntax]
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== Attribute of ==
 
* [[Entity]]: The [[EntityId]] attribute provides the [[EntityId]] of the [[Entity]] having this attribute.
 
  
== Notes ==
 
* An [[EntityId]] is globally unique identifier of an [[Entity]]
 
  
[[Category:Higgins Global Graph 1.1]]
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[[Category:Context Data Model 2.0]]

Latest revision as of 21:49, 9 November 2010

{{#eclipseproject:technology.higgins|eclipse_custom_style.css}}

Version

This page defines the concept of EntityId used in the Context Data Model 2.0.

Definition

  • Identifies an Entity within its containing Context.
  • MAY be absolute or relative
  • An absolute EntityId
    • Resolves to one authoritative Entity
    • MUST uniquely identify both an Context and a specific Entity within it.
  • A relative Entity UDI MUST uniquely identify an Entity within the local Context.
  • Is kind of UDI URI.
  • An EntityId is a "Resource UDI" as defined in section 4 of UDI Syntax

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