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Question 22. Consider the following table in a relational database. Last Name Rank Room Shift Morning Afternoon Smith Manager 234 Jones Custodian Custodian 33 Evening Morning Smith 33 Doe Clerical 222 According to the data shown in the table, which of the following could be candidate keys of the table? a) {Last Name} b) {Room} c) {Shift} d) {Rank, Room} e) {Room, Shift}

Question 22. Consider the following table in a relational database. Last Name Rank Room Shift Morning Afternoon Smith Manager 234 Jones Custodian Custodian 33 Evening Morning Smith 33 Doe Clerical 222 According to the data shown in the table, which of the following could be candidate keys of the table? a) {Last Name} b) {Room} c) {Shift} d) {Rank, Room} e) {Room, Shift}

Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter3: The Relational Database Model
Section: Chapter Questions
Problem 16RQ: Create the table that results from applying an INTERSECT relational operator to the tables shown in...
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Question 22. Consider the following table in a relational database. Last Name Rank Room Shift Smith Manager 234 Morning Jones Custodian 33 Afternoon Evening Morning Smith Custodian 33 Doe Clerical 222 According to the data shown in the table, which of the following could be candidate keys of the table? a) {Last Name} b) {Room} c) {Shift} d) {Rank, Room} e) {Room, Shift}
Transcribed Image Text:Question 22. Consider the following table in a relational database. Last Name Rank Room Shift Smith Manager 234 Morning Jones Custodian 33 Afternoon Evening Morning Smith Custodian 33 Doe Clerical 222 According to the data shown in the table, which of the following could be candidate keys of the table? a) {Last Name} b) {Room} c) {Shift} d) {Rank, Room} e) {Room, Shift}
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