POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
STRATIGRAPHIC_MARKER
(* Local *)
SUBTYPE OF
(
feature_boundary_undivided
);
INVERSE
mineral_zone_base :
SET [0:?] OF
mineral_zone
FOR
base_marker;
mineral_zone_top :
SET [0:?] OF
mineral_zone
FOR
top_marker;
UNIQUE
si:
earth_feature
.identifier,
earth_feature
.unique_within;
END_ENTITY
; (* stratigraphic_marker *)
Generated on Tue Jul 10 19:39:09 2001
© Copyright 2001 POSC. All rights reserved.