The purpose of the index in an ISAM file is to
A) increase the time needed to write records on the prime area.
B) bump records to the overflow area when no prime space is available.
C) link the record key to the address.
D) search tracks for the desired record.

Question

Quizplus · Accepted Answer

The purpose of the index in an ISAM file is to link the record key to the address, allowing for faster retrieval of records. The index serves as a lookup table that maps each record key to the physical location of the corresponding record on disk. This allows the system to quickly locate the desired record without the need to scan through the entire file. The index is typically stored separately from the data in a data structure such as a B-tree or hash table.

The Purpose of the Index in an ISAM File Is