Figure PR.31 - Representing the Physical Location of Physical Objects

Location is used in two different ways and has two very different semantics:<br/>        • The place of a Device (or perhaps an Equipment or EquipmentHolder)<br/>        • The position of a physical component<br/>These are in reality two different concepts, though people tend to combine their meanings into one. <br/>The PlacePhysicalResourceAssociation association defines the location(s) that a particular PhysicalResource can be found at. Note that there can be multiple locations assigned for a particular PhysicalResource. For example, a router can be installed in a POSITION in a Rack, which is in a particular PLACE (e.g., a Room in a Floor), which is in a particular STRUCTURE (e.g., a building) at a particular ADDRESS (e.g., the postal address that the main building is located at). The PhysicalLocationDetails association class is used to help disambiguate these overlapping locations.<br/>The Figure shows that “Place” is broken into two levels of granularity, represented by the two subclasses of Place.<br/>        • LocalPlace<br/>        • GeographicPlace <br/>