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Which of the following best describes why a database is typically used over a flat file when dealing with large sets of data?
Multiple concurrent users
Redundancy
Accessibility
Capacity
The correct answer is Multiple concurrent users, as databases are designed to support many users accessing and manipulating data simultaneously without causing conflicts or data corruption. Databases are also designed to efficiently handle large data sets, making them suitable for scalability and speed over flat files which do not support these features as effectively. Capacity was incorrect because it is too vague; databases indeed have high capacity, but flat files can also store significant amounts of data. Accessibility is incorrect because both databases and flat files can be accessible, albeit databases offer structured access control. Redundancy is incorrect because databases aim to minimize redundancy through normalization, whereas flat files can often include duplicated data.
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