In the context of indexed file processing, what does an alternate index provide?
- A backup index used in case of index corruption
- A secondary copy of the primary index for redundancy
- An additional path to access records based on a different key, improving retrieval efficiency
- An alternative record layout for specialized queries
An alternate index in indexed file processing provides an additional path to access records based on a different key. This enhances retrieval efficiency by allowing applications to access the same data using different indexing criteria.
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