P Pre Langsql Cssfilehk1stylet S Instructor Tname Sname U #434

</p> <pre><code class="language-sql">{t | Э s ε instructor (t[name] = s[name] ∧ Э u ε department (u[dept name] = s[dept name] ∧ u[building] = “Watson”))}</code></pre> <p>Which of the following best describes the query?

This multiple choice question (MCQ) is related to the book/course gs gs117 Database Management System. It can also be found in gs gs117 Relational Algebra - Tuple Relational Calculus and Domain Relational Calculus - Quiz No.1.

{t | Э s ε instructor (t[name] = s[name] ∧ Э u ε department (u[dept name] = s[dept name] ∧ u[building] = “Watson”))}