POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
LOCATABLE_OBJECT
ABSTRACT SUPERTYPE OF
(
ONEOF
(
earth_feature
,
facility
,
interpreted_feature
,
material
))
SUBTYPE OF
(
topological_object
);
INVERSE
activity :
SET [0:?] OF
activity
FOR
activity_context;
located_by :
SET [0:?] OF
spatial_object
FOR
located_object;
END_ENTITY
; (* locatable_object *)
Generated on Tue Jul 10 19:38:05 2001
© Copyright 2001 POSC. All rights reserved.