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What is File Access Methods Explained about?

A serial file stores records sequentially in the order they are added, while a sequential file stores records sequentially based on a key field. An indexed sequential file stores records sequentially by key but also has an index to directly access records. A random access file stores records in random order using disk addresses calculated from a hashing algorithm applied to a primary key. Hashing maps keys to disk addresses but can cause collisions if two keys map to the same address, requiring overflow blo

Author

Edgardo Leysa

Language

EN