What is best way to represent specialization/generalization hierachy if the participation and disjoint constraints are MANDATORY AND NONDISJOINT? A)Student(ssn,name,phone,program), Staff(ssn,name,phone,department) B)Person(ssn,name,phone), PersonDetails(ssn,studentFlag,program,staffFlag,department) C)Person(ssn,name,phone), Student(ssn,program),Staff(ssn,department) D)Person(ssn,name,phone,studentflag,program,stafflag,department)
SQL
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What is best way to represent specialization/generalization hierachy if the participation and disjoint constraints are MANDATORY AND NONDISJOINT?
A)Student(ssn,name,phone,
B)Person(ssn,name,phone), PersonDetails(ssn,studentFlag,program,staffFlag,department)
C)Person(ssn,name,phone), Student(ssn,program),Staff(ssn,department)
D)Person(ssn,name,phone,studentflag,program,stafflag,department)
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