Given the following ER diagram, assume that a course may or may not use a textbook,...
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Given the following ER diagram, assume that a course may or may not use a textbook, but that a text by definition is a book that is used by one or more courses. A course may not use more than five textbooks. Instructors teach from two to four courses, and a course can be taught by multiple instructors. There might be courses without instructor. Specify the (min, max) constraints for each relationship: INSTRUCTOR TEACHES INSTRUCTOR Teaches COURSE COURSE Uses TEXT TEXT COURSE Taught By INSTRUCTOR TEXT Used By COURSE COURSE USES [Choose ] [Choose ] (N, 1) (4,2) (5,0) (0.5) (0, N) (1, N) (2,4) [Choose ] Given the following ER diagram, assume that a course may or may not use a textbook, but that a text by definition is a book that is used by one or more courses. A course may not use more than five textbooks. Instructors teach from two to four courses, and a course can be taught by multiple instructors. There might be courses without instructor. Specify the (min, max) constraints for each relationship: INSTRUCTOR TEACHES INSTRUCTOR Teaches COURSE COURSE Uses TEXT TEXT COURSE Taught By INSTRUCTOR TEXT Used By COURSE COURSE USES [Choose ] [Choose ] (N, 1) (4,2) (5,0) (0.5) (0, N) (1, N) (2,4) [Choose ]
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1 INSTRUCTOR teaches COURSE NM 2COURSE thought By INSTRUCTOR MN 3 COURSE uses TEXT 1... View the full answer
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