a) {t | t ε instructor ∧ t[salary] > 80000}
b) Э t ∈ r (Q(t))
c) {t | Э s ε instructor (t[ID] = s[ID]∧ s[salary] > 80000)}
d) None of the mentioned
Find the ID, name, dept name, salary for instructors whose salary is greater than $80,000 .
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answerhappygod
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Find the ID, name, dept name, salary for instructors whose salary is greater than $80,000 .
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