POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
COMMON_ACTIVITY_INVOLVEMENT
(* Local *)
SUBTYPE OF
(
association_reference
);
involved_class :
OPTIONAL
classification_class
;
involved_entity :
OPTIONAL
ref_entity
;
involvement_role :
ref_activity_involvement_role
;
involving_class :
activity_class
;
UNIQUE
si: involving_class, involved_class, involved_entity, involvement_role;
WHERE
val: EXISTS(involved_class) OR EXISTS(involved_entity);
END_ENTITY
; (* common_activity_involvement *)
Generated on Tue Jul 10 19:37:38 2001
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