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Draw The following ER Model: 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.

Draw The following ER Model: 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.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Draw The following ER Model: 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.
Transcribed Image Text:Draw The following ER Model: 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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