When should I use indexes in database design?
Indexes should be used when you need to speed up query performance, especially for large datasets.
Can you give me examples of when not to use them?
Avoid using indexes on columns with low cardinality or on frequently updated tables, as they can slow down writes.
How do indexes affect database performance?
Indexes improve read performance but can add overhead to write operations, so balance is key.
What types of indexes are there?
Common types include B-tree, hash, and full-text indexes, each serving different use cases.
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