Consider the following relational database schema: • Movies (title, year, length, studioName) A tuple (t, y, l, s) indicates that a movie with title t was produced by studio s in year y, and the length (in minutes) of the movie was l. • Stars (starName, title, year) A tuple (s, t, y) indicates that the star (i.e., actor or actress) with name s acted in a movie with title t in year y. Express each of the following queries in relational algebra (not in SQL): (a) Find the title and year of every pair of movies that have at least one star in common. (b) in any single year. Find the name of each star who never acted in more than one movie (c) the "Paramount" studio between 2000 and 2019. Find the name of each star who acted in every movie produced by
Consider the following relational database schema: • Movies (title, year, length, studioName) A tuple (t, y, l, s) indicates that a movie with title t was produced by studio s in year y, and the length (in minutes) of the movie was l. • Stars (starName, title, year) A tuple (s, t, y) indicates that the star (i.e., actor or actress) with name s acted in a movie with title t in year y. Express each of the following queries in relational algebra (not in SQL): (a) Find the title and year of every pair of movies that have at least one star in common. (b) in any single year. Find the name of each star who never acted in more than one movie (c) the "Paramount" studio between 2000 and 2019. Find the name of each star who acted in every movie produced by
Chapter2: Database Design Fundamentals
Section: Chapter Questions
Problem 11RQ
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