DBMS-Physical Data Organization - Practice Questions

Question 1

In magnetic tape, the read/write head reads magnetized areas (which represent data on the tape), converts them into electrical signals and sends them to main memory and CPU for execution or further processing.

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Question 2

Sequential file organisation is most common because it makes effective use of the least expensive secondary storage devices such as magnetic disk.

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Question 3

It is more economical to store data on secondary storage devices than in primary storage devices.

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Question 4

Because of the high cost and volatile nature of the auxiliary memory, permanent storage of data is done in the main memory.

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Question 5

A file contains the following that is needed for information processing:

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Question 6

Sequential access storage is off-line

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Question 7

Head activation time is the time:

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Question 8

In a physical storage, a record has a physical storage location or address associated with it.

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Question 9

The term non-volatile means it stores are retains the programs and data even after the computer is switch off.

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Question 10

Files could be made of fixed-length records or variable-length records.

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