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Direct access files

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Suppose a direct access file consists of sectors with 1024 byte capacity. Suppose also that records are 32 bytes long. On which logical sector do the following logical records lie? What is the relative record number in the sector?

Logical record 42
Logical record 131
Logical record 32
Logical record 512

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The expert examines direct assess files.

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First multiply the logical record size by the logical record number to get the byte position.

Logical record 42 -> 42 * 32 = 1344

Byte position 1344
--------------------- = 1, remainder 320.
1024 bytes/sector

Logical sector is 1, the relative record number in the sector = 320/32, which is ...

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