Can you explain how indexes improve database performance?
Indexes help speed up data retrieval by allowing the database to find rows more quickly, similar to an index in a book.
What types of indexes are there?
There are several types of indexes, including B-tree indexes, hash indexes, and full-text indexes, each serving different purposes.
Are there any downsides to using indexes?
Yes, while indexes improve read performance, they can slow down write operations and consume additional storage.
How do I decide which columns to index?
You should index columns that are frequently used in WHERE clauses, JOIN conditions, or as part of an ORDER BY statement.
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