POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
DOCUMENT
ABSTRACT SUPERTYPE OF
(
ONEOF
(
electronic_document
,
hardcopy_document
))
SUBTYPE OF
(
material
);
document_specification :
document_specification
;
END_ENTITY
; (* document *)
Generated on Tue Jul 10 19:37:42 2001
© Copyright 2001 POSC. All rights reserved.