POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
TOPOLOGICAL_OBJECT
ABSTRACT SUPERTYPE OF
(
ONEOF
(
locatable_object
,
spatial_object
))
SUBTYPE OF
(
business_object
);
INVERSE
coordinate_system_context :
SET [0:?] OF
general_coordinate_system
FOR
local_context;
intersection_role :
SET [0:?] OF
space_time_operation
FOR
intersecting_object;
primary_role :
SET [0:?] OF
space_time_operation
FOR
primary_object;
primary_topological_relation :
SET [0:?] OF
topological_relationship
FOR
primary_topological_object;
secondary_topological_relation :
SET [0:?] OF
topological_relationship
FOR
secondary_topological_object;
source_space_time_operation :
SET [0:1] OF
space_time_operation
FOR
resulting_object;
END_ENTITY
; (* topological_object *)
Generated on Tue Jul 10 19:39:13 2001
© Copyright 2001 POSC. All rights reserved.