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Question: Difference between Hashfile and Sequential File?

Answer: Hash file stores the data based on hash algorithm and on a key value. A sequential file is just a file with no key column. Hash file used as a reference for look up. Sequential file cannot

Hash file stores the data based on hash algorithm and on a key value. A sequential file is just a file with no key column. Hash file used as a reference for look up. Sequential file cannot Source: CoolInterview.com

Difference between Hashfile and sequential file is , searching a record is too fast in hash file based on the hashkey, we can get the address of record directly in hashfile based on the hashkey, and in sequential file it should search record sequential mode only, it has to search for record by record, and we can remove duplicate records based on the hash key in hashfile, we cannot in sequential file. Source: CoolInterview.com

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