Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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In Racket, which of the following is a call of the predicate for the defined movie struct? Select all that apply.

A)  (check-expect (movie-length TOY) 81)

B)  (make-movie "Beauty and the Beast" "Gary Trousdale" 92 true)

C)  (check-expect (movie-title LION) “Toy Story")

D)  (movie? 81)

E)  (movie-dvd? LION)

(define-struct movie (title director length dvd?))
; a Textbook is a (make-book String String Natural Boolean)
; interp: a movie where
; title is the movie’s title
; director is the name of the movies’ director
; length is the length of the movie in minutes
; dvd? is whether the movie is available in dvd format (if true)

(define TOY (make-movie “Toy Story" "John Lasseter" 81 true))
(define LION (make-movie "The Lion King" "Rob Minkoff" 89 false))

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