| description |
Relation is a better name for attribute thats used in OAV since here attribute is used to describe relations and attributes (properties). The entities are described as having properties that take values but also as having relations between each other. These can be the relation of part to the whole (is_part_of), or of sub-type to super type (is_type_of). The reverse assignments are (has_part) and (has_type). Another type of relation is Instance_relation that describes an entity having an instance of a unique individual. The relation is called (is_instance_of) and the reverse is (has_instance). The remaining relation is Property_relation in which an entity is described as having a property or variable, a characteristic metric that is appropriate for it. The relations are (is_property_of) and (has_property). An example is given in (Bee.) |
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