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ISRO | ISRO CS 2018 | Question 41

  • Last Updated : 03 Jul, 2018

Consider the following table in a relational database

 Last Name      Rank          Room       Shift
 Smith          Manager       234        Morning
 Jones          Custodian     33         Afternoon
 Smith          Custodian     33         Evening
 Doe            Clerical      222        Morning

According to the data shown in the table, which of the following could be a candidate key of the table?
(A) {Last Name}
(B) {Room}
(C) {Shift}
(D) {Room, Shift}

Answer: (D)


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