Consider a university database for the scheduling of classrooms for final exams. This database could be modeled

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Consider a university database for the scheduling of classrooms for final exams. This database could be modeled as the single entity set exam, with attributes course-name, section-number, room-number, and time. Alternatively, one or more additional entity sets could be defined, along with relationship sets to replace some of the attributes of the exam entity set, as

• Course with attributes name, department, and c-number

• Section with attributes s-number and enrollment, and dependent as a weak entity set on course

• Room with attributes r-number, capacity, and building

a. Show an E-R diagram illustrating the use of all three additional entity sets listed.

b. Explain what application characteristics would influence a decision to include or not to include each of the additional entity sets

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Related Book For  book-img-for-question

Database System Concepts

ISBN: 978-0072554816

4th Edition

Authors: Henry F. Korth, S. Sudarshan

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