2) GW uses the CRN (Course Registration Number) as the unique identifier (primary key) in the database of courses. Consider the situation in which the database containing the CRN archive is unexpectedly destroyed. The entries below are possible alternative identifiers. Which entry could serve as a temporary substitute for the primary key? Choose one. a. Semester and professor teaching the course b. Web address of the departmental home page listing the courses offered in a given semester c. Semester, day of the week, time and classroom for the course d. Department the course belongs to (e.g., ISTM, History, Physics,...)
2) GW uses the CRN (Course Registration Number) as the unique identifier (primary key) in the database of courses. Consider the situation in which the database containing the CRN archive is unexpectedly destroyed. The entries below are possible alternative identifiers. Which entry could serve as a temporary substitute for the primary key? Choose one. a. Semester and professor teaching the course b. Web address of the departmental home page listing the courses offered in a given semester c. Semester, day of the week, time and classroom for the course d. Department the course belongs to (e.g., ISTM, History, Physics,...)
Database Systems: Design, Implementation, & Management
11th Edition
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Chapter10: Transaction Management And Concurrency Control
Section: Chapter Questions
Problem 1P
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22)
GW uses the CRN (Course Registration Number) as the unique identifier (primary key) in the
| a. |
Semester and professor teaching the course |
|
| b. |
Web address of the departmental home page listing the courses offered in a given semester |
|
| c. |
Semester, day of the week, time and classroom for the course |
|
| d. |
Department the course belongs to (e.g., ISTM, History, Physics,...) |
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