What is the effect of indexing on database performance?
- Decreases performance
- Improves performance for retrieval but slows down updates
- Improves performance for updates but slows down retrieval
- No effect on performance
Indexing in a database improves performance for data retrieval by allowing the system to quickly locate records. However, it may slightly slow down updates due to the need to maintain the index structure whenever data is added, modified, or deleted.
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