POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
DOCUMENT_SCHEMA_ENTITY_CONTENT
SUBTYPE OF
(
association
);
document_content :
OPTIONAL
document_content
;
document_schema_entity :
document_schema_entity
;
sequence :
OPTIONAL
ndt_pint1
;
text :
OPTIONAL
ndt_text
;
UNIQUE
si: text, sequence, document_schema_entity, document_content;
WHERE
mse: EXISTS(text) XOR EXISTS(document_content);
END_ENTITY
; (* document_schema_entity_content *)
Generated on Tue Jul 10 19:37:43 2001
© Copyright 2001 POSC. All rights reserved.