gs gs117 Relational Algebra - Tuple Relational Calculus and Domain Relational Calculus - Quiz No.1
gs gs117 Database Management System Quiz
This quiz belongs to book/course code gs gs117 Database Management System of gs organization. We have 92 quizzes available related to the book/course Database Management System. This quiz has a total of 10 multiple choice questions (MCQs) to prepare and belongs to topic Relational Algebra. NVAEducation wants its users to help them learn in an easy way. For that purpose, you are free to prepare online MCQs and quizzes.
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{t | Э s ε instructor (t[name] = s[name] ∧ Э u ε department (u[dept name] = s[dept name] ∧ u[building] = “Watson”))}Which of the following best describes the query?
{< c > | Э s (< c, a, s, y, b, r, t >ε section ∧s = “Fall” ∧ y = “2009” ∨Эu (< c, a, s, y, b, r, t >ε section ∧s = “Spring” ∧ y = “2010”{< n, c > | Э i, a (< i, c, a, s, y > ε teaches ∧ Э d, s (< i, n, d, s > ε instructor ∧ d = “Physics”))}{< n > | Э i, d, s (< i, n, d, s > ε instructor ∧ s > 80000)}{< i, n, d, s > | < i, n, d, s > ε instructor ∧ s > 80000}Online Quizzes of gs117 Database Management System
