POSC Specifications: Epicentre Version 3.0 Logical Data Model

COMMON_FACILITY_COMPOSITION (Local) (C059, C064, C123, C151)

(Rules) (Express)

An association indicating that facilities characterized (via classification or kind of class) by a facility class may reasonably be expected to have a subfacility that is characterized by another facility class. This is not declaring the composition of a class. Rather it is declaring an expected composition of a facility that is a member of the class. A decomposition is not required but if a decomposition is defined then this is the expected decomposition. For example, a class of 'storage facility' might have two common compositions of class 'container' and 'cover' respectively. Thus, a facility which is characterized as 'storage facility' could be expected to have two subfacilities which are respectively characterized as 'container' and 'cover'. This composition is the nominal composition of the actual facility (what is expected), but the actual facility composition should describe what was actually done rather than what was intended.


Local rules:

Supertype path(s):

Entity projects as table COMMON_FACILITY_COMPOSITION.

Referenced in Diagrams:


Generated on Tue Jul 10 15:39:59 2001
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