Database Management System (DBMS) Questions. 1. A disk block address contains al

Question

Database Management System (DBMS) Questions.

1.    A disk block address contains all of the following EXCEPT (Choose one)

interblock gap number

surface number

track number

block number

2.    Which component of disk access is the slowest? (Choose one)

block transfer time

rotational delay time

seek time

main memory access time

3.    Variable length records with tags are more efficient than fixed length fields for semi-structured data. (True or False)

4.    A track is the unit of transfer for data from a disk to main memory. (True or False)

5.    Of the organization schemes we study in this class, random block allocation is the most flexible. (True or False)

6.    Primary storage is typically non-volatile. (True or False)

7.    Which of these is not an example of secondary storage media? (Choose one)

magnetic disk

magnetic tape

optical disk

cache memory

interblock gap number

surface number

track number

block number

Explanation / Answer

1. interblock gap number
2. rotational dalay time ( even seek time can also be considered )
3 False . It reduces the performance to handle variable length
4. False
5. True
6. False
7 Cache Memory

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