POSC Specifications: Epicentre Version 3.0 Logical Data Model

DATUM (abstract) (C055, C109)

(Rules) (Express)

The abstract supertype of all horizontal and vertical datums.


Local rules:

Supertype path(s):

Entity replicated into subtype tables (@datum).

Referenced in Diagrams:


Generated on Tue Jul 10 15:40:33 2001
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