PCS Ontology v1.5.9, 2007-12-19

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Class

A set of things which have particular attributes in common. Every entity is either a "Class" or an "Individual", and some may be both. For example, "SoundRecording" is the Class of all instances of SoundRecording. A Class may also be a member of another Class. For example, "SoundRecording" is a member of the Class of "CreationType".

Meaning Type Derived

Relationships
Parents	Category	A type, quality or measurement of another entity. A Category may be expressed in a variety of forms: as A Flag ("True/False"), a Class (eg "DigitalResource"), an adjectival Quality (eg "BlackAndWhite"), a nounal Quality (eg "Audibility") or as a numeric Quantity (eg "4.33MB"). Often the same categorization can be represented in several different ways. Example: the statements "ResourceX is an AudioCreation" (Class), "ResourceX is Audible" (adjectival Quality), "ResourceX has Audibility (noun Quality)" and "ResourceX has AudibilityFlag=True" (Flag) would all mean the same thing.
Children	DataType	An entity in a specific form of data representation.
	Type	A Class whose members are themselves Classes. Example: ImageType is a Type whose members include the Classes "Photograph" and "Logo".

Copyright © 2007, IFPI