Which of the following file organization requires a primary key?
Indexed file organization
Random file organization
Serial file organization
Sequential file organization
Correct answer is A
No explanation has been provided for this answer.
One unique feature of index file is that it contains
Reference number
Relative number
Sequential number
Static number
Correct answer is A
No explanation has been provided for this answer.
The arrangement that gives the correct order of magnitude of the database elements is
Character, field, record, table, database, file
Character, field, record, table, file, database
Database, table, file, record, field, character
Database, record, file, field, table, character
Correct answer is B
No explanation has been provided for this answer.
Virus effect can be prevented by
Installing and updating antivirus
Installing new operating system
Purchasing new computer
Using external disk on public computer system
Correct answer is A
No explanation has been provided for this answer.
Worm
Trojan horse
Macro virus
Logic bomb
Correct answer is B
No explanation has been provided for this answer.