POSC Specifications Version 2.2
Epicentre Logical Data Model
ENTITY
RING
ABSTRACT SUPERTYPE OF
(
ONEOF
(
earth_surface_boundary
,
wellbore_ring
,
earth_position_ring
,
other_ring
,
ring_element
))
SUBTYPE OF
(
simple_spatial_object
);
INVERSE
face :
SET [0:?] OF
face
FOR
bounding_ring;
edge :
SET [0:?] OF
edge
FOR
ring;
pty_geometry_3d_ring :
SET [0:?] OF
pty_geometry_3d_ring
FOR
ring;
pty_geometry_2d_ring :
SET [0:?] OF
pty_geometry_2d_ring
FOR
ring;
END_ENTITY
; (* ring *)
Generated on Tue Dec 9 09:50:36 1997
© Copyright 1997 POSC. All rights reserved.