Which of these operations would not improve the performance of a parallel database system?
Building indexes
Deleting unwanted data
Evaluating queries
Storing data across several sites
Correct answer is D
No explanation has been provided for this answer.
Maintaining the value nd content of data is part of data
Coding
Integrity
Secrecy
Security
Correct answer is B
No explanation has been provided for this answer.
Which of the following is not an advantage of file organization?
Faster processing of data input
Postal data retrieval
Prevention of data failure and data loss
Safety of data and information in a storage medium
Correct answer is D
No explanation has been provided for this answer.
Direct-access file
Index sequential file
Random access file
Sequential access file
Correct answer is D
No explanation has been provided for this answer.
Which of the following is not an effect of computer virus?
It distorts the computer screen
Interferes with computer operation
Damages the computer
Corrupts the computer
Correct answer is A
No explanation has been provided for this answer.