What is the main implication of index storage cost?

What is the main implication of index storage cost?

• A. Regular audits are unnecessary.
• B. Each index uses disk space; unnecessary indexes waste disk and memory.
• C. Indexes always improve storage efficiency.
• D. Indexes disappear after data aging.

Answer: (B)

Indexes are data structures that speed up searches, but they come with a cost: each index takes up disk space and also uses memory for caching and for maintenance during writes. The main implication is that every index consumes resources, so adding unnecessary indexes wastes disk space and RAM and can slow down data-modifying operations due to extra work to keep the indexes updated. In other words, there’s a trade-off: you gain faster reads, but you pay in storage and maintenance. That’s why unnecessary indexes should be avoided.

Indexes are data structures that speed up searches, but they come with a cost: each index takes up disk space and also uses memory for caching and for maintenance during writes. The main implication is that every index consumes resources, so adding unnecessary indexes wastes disk space and RAM and can slow down data-modifying operations due to extra work to keep the indexes updated. In other words, there’s a trade-off: you gain faster reads, but you pay in storage and maintenance. That’s why unnecessary indexes should be avoided.