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What is the difference between serial and sequential files? How searching is applied on both?
Ans: A serial file is one where the records have been stored in the order where they have occurred. They have not been sorted into any specific order.
An instance of a serial file is an unsorted transaction file.
A shopping list is an instance of a non-computerised serial file. Items are appended to the list while that item runs low.
Serial files can be stored on tape, disc or in memory.
A sequential file is one where the records are stored in sorted order of one or more key fields.
An instance of a sequential file is a sorted transaction file.
A class register is an instance of a non-computerised sequential file sorted on surname
Define hot swapping? Hot swapping permits the removal of faulty disks and changes it by new ones without turning power off. Hot swapping decreases the mean time to repair.
please give me introduction to full data in D B M S in a short assignment
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