POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
CONTRACT_ACTIVITY_TYPE
SUBTYPE OF
(
association
);
activity_class :
activity_class
;
contract :
OPTIONAL
contract
;
contractual_obligation :
OPTIONAL
contractual_obligation
;
UNIQUE
si: contract, contractual_obligation, activity_class;
WHERE
val: EXISTS(contract) OR EXISTS(contractual_obligation);
END_ENTITY
; (* contract_activity_type *)
Generated on Tue Jul 10 19:37:40 2001
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