Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter9: Database Design
Section: Chapter Questions
Problem 5P
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Consider the E-R diagram for a university database as shown in Figure 1. What is the primary key for section?
(a) sec id
(b) sec id, semester, year, course id
(c) sec id, semester, year
(d) sec id, semester, year, course id, time slot id

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