POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
ELECTRONIC_DOCUMENT
SUBTYPE OF
(
document
);
digital_file :
OPTIONAL
ndt_binary
;
ref_digital_file_format :
ref_digital_file_format
;
UNIQUE
si:
material
.identifier, ref_digital_file_format,
document
.document_specification;
END_ENTITY
; (* electronic_document *)
Generated on Tue Jul 10 19:37:46 2001
© Copyright 2001 POSC. All rights reserved.