How can composite indexing be optimized to enhance query performance in relational databases?
- Use covering indexes
- Increase the number of indexed columns
- Avoid indexing on frequently updated columns
- Use B-tree indexes only
Composite indexing can be optimized by using covering indexes, which include all the columns required by a query. This reduces the need for additional table lookups and can significantly enhance query performance. Increasing the number of indexed columns may not always be beneficial as it can increase index maintenance overhead. Indexing frequently updated columns should be avoided to prevent write performance degradation. B-tree indexes are just one type of composite index, and the choice of index type depends on the specific use case.
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