POSC Specifications Version 2.2
Epicentre Logical Data Model
ENTITY
TOPOLOGICAL_OBJECT
ABSTRACT SUPERTYPE OF
(
ONEOF
(
spatial_object
,
temporal_object
));
INVERSE
primary_role :
SET [0:?] OF
space_time_operation
FOR
primary_object;
source_space_time_operation :
BAG [0:1] OF
space_time_operation
FOR
resulting_object;
intersection_role :
SET [0:?] OF
space_time_operation
FOR
intersecting_object;
secondary_topological_relationship :
SET [0:?] OF
topological_relationship
FOR
secondary_topological_object;
primary_topological_relationship :
SET [0:?] OF
topological_relationship
FOR
primary_topological_object;
END_ENTITY
; (* topological_object *)
Generated on Tue Dec 9 09:50:49 1997
© Copyright 1997 POSC. All rights reserved.