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CSE - Questions and solutions set-19

Computer science and engineering(CSE) - Question & solution set-19
Question:-
Option (A)

BankAccount_Num is a candidate key

Option (B)

Registration_Num can be a primary key

Option (C)

UID is a candidate key if all students are from the same country

Option (D)

If S is a superkey such that S ∩ UID is NULL then S ∪ UID is also a superkey

Correct Option:
A
Question Solution:

Since students can have joint accounts, two students can have same bank account number. So, bank account number can not be candidate key.

Question:-
Option (A)
Embed web objects from different sites into the same page
Option (B)
Refresh the page automatically after a specified interval
Option (C)
Automatically redirect to another page upon download
Option (D)
Display the client time as part of the page
Correct Option:
D
Question Solution:
Client side scripting is required to display client’s system time on page.
Question:-
Option (A)
Functional Requirements
Option (B)
Non-Functional Requirements
Option (C)
Goals of Implementation
Option (D)
Algorithms for Software Implementation
Correct Option:
D
Question Solution:
Algorithms for implementation should not be part of system requirements.