Multiple choice technology databases

I/O operations on the data warehouse is expensive ?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct answer is True because I/O operations on data warehouses are computationally expensive due to the massive volume of data involved. Data warehouses typically store terabytes to petabytes of historical data, and reading or writing this much data requires significant time and resources. The expense comes from disk I/O, network transfer, and processing overhead.

AI explanation

Disk I/O is typically the slowest part of any database operation, and data warehouses deal with very large volumes of data scanned for analytical queries, making I/O operations comparatively expensive in terms of time and system resources. This is why warehouse design techniques like indexing, partitioning, and columnar storage exist — specifically to reduce the amount of expensive I/O needed per query.

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