Differentiate between physical and logical records?
Physical records are unit of data for input or output, such as a punched card a tape block,
or a record on a disk. One Or more logical records may be contained in one physical record. Logical records are Cornplçte unit of information that contains all fields describing something. In an inventory file containing 2000 different product items, there are 2000 logical records, one for each item.
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