POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
MATERIAL_CLASSIFICATION
SUBTYPE OF
(
transient_association
);
material :
material
;
material_class :
material_class
;
object_abundance_class :
OPTIONAL
object_abundance_class
;
uncertainty_class :
OPTIONAL
uncertainty_class
;
UNIQUE
si:
transient_association
.end_time,
transient_association
.start_time, material, material_class;
END_ENTITY
; (* material_classification *)
Generated on Tue Jul 10 19:38:06 2001
© Copyright 2001 POSC. All rights reserved.