An appearance represents a unique multilevel path to a component through an
exploded structure from the top-level product. An appearance stores attributes
about its validity that allow searches for a given date or unit, for example, the left,
front wheel in car model X, effective from 1 June 2005. In addition, an appearance
stores the absolute transform and values of occurrence notes to tracked.
Appearances are collected into appearance sets (caches). Teamcenter creates an
appearance set for each speci fic appearance root, that is, a top level product and
revision rule that you want to track. Teamcenter updates the appearance set each
time a new revision of a part is released within the tracked product and the release
status speci fied in the revision rule for the appearance cache. Teamcenter records
a cumulative history of all changes since the appearance set was created, allowing
you to search for components in the structure that were released or made effective
at any speci fied date or unit number.
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