Persona Change Events

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This document describes a proposed ontology to describe attribute change events.

Classes

Event

• Change event. Abstract superclass. Subclasses describes changes to an attribute attribute of some entity entity that happened at dateTime at
• exactly 1 at attribute value
• exactly 1 attribute attribute value
• exactly 1 entity attribute value

Get

• One or more values of attribute "attribute" of entity "entity" was read at dateTime "at"
• subclass of Event

Add

• New value "value"(s) was/were added to attribute "attribute" of entity "entity" at dateTime "at"
• subclass of Event
• min of 1 value attribute values

Modify

• The attribute "attribute" of entity "entity" was modified at datetime "at". The value "oldValue" was replaced with value(s) "newValue"
• subclass of Event
• exactly 1 oldValue
• min of 1 value

Delete

• subclass of Event

Complex Attributes

attribute

• The affected attribute.

change

• Change event(s) that have happened.
• value: Event

entity

• The affected entity

Simple/Complex Attribute

oldValue

• Old value of an attribute
• used by: Delete, Modify

value

• New value(s) of an attribute
• used by: Add, Modify

Simple Attributes

at

• When this Event happened.
• value: xsd:dateTime
• used by: Event

Examples

Add

On Jan 1 2010 we added the value "billClinton" to the attribute "p:username". Not shown is an optional "change" back link from Account_1 to Add_1.

Delete

Modify

See Also

• Persona Data Model 2.0