What is the performance impact of using indexes in databases?
Using indexes can significantly improve query performance by reducing the amount of data the database needs to scan.
Are there any downsides to using indexes?
Yes, while indexes speed up read operations, they can slow down write operations due to the overhead of maintaining the index.
How do I decide which columns to index?
Focus on columns that are frequently used in WHERE clauses, JOIN conditions, or as part of an ORDER BY statement.
Can too many indexes be a problem?
Absolutely! Having too many indexes can lead to increased storage costs and slower write performance.
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