POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
EQUIPMENT_ITEM_CONNECTION
SUBTYPE OF
(
transient_association
);
from_equipment :
equipment_item
;
to_equipment :
equipment_item
;
UNIQUE
si:
transient_association
.end_time,
transient_association
.start_time, from_equipment, to_equipment;
WHERE
val1: to_equipment :<>: from_equipment;
END_ENTITY
; (* equipment_item_connection *)
Generated on Tue Jul 10 19:37:47 2001
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