POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
EARTH_FEATURE_CLASS
(* Open *)
SUBTYPE OF
(
classification_class
);
parent_class :
OPTIONAL
earth_feature_class
;
INVERSE
be_a_member_of :
SET [0:?] OF
earth_feature_class_clsn
FOR
have_as_a_member;
child_class :
SET [0:?] OF
earth_feature_class
FOR
parent_class;
classify :
earth_feature_class_clsn
FOR
be_classified_as;
earth_feature :
SET [0:?] OF
earth_feature
FOR
kind;
earth_feature_classification :
SET [0:?] OF
earth_feature_classification
FOR
earth_feature_class;
UNIQUE
si:
technical_reference
.identifier,
aliasable_technical_reference
.naming_system;
END_ENTITY
; (* earth_feature_class *)
Generated on Tue Jul 10 19:37:46 2001
© Copyright 2001 POSC. All rights reserved.