In a scenario where multiple entities are frequently joined on a specific column, what indexing strategy would improve query performance?
- Clustered Index
- Composite Index
- Covering Index
- Non-Clustered Index
A Covering Index would be the most suitable strategy. This index type includes all the columns that are necessary for a query, avoiding the need to look up data in the original table. When multiple entities are frequently joined on a specific column, using a Covering Index can significantly improve query performance by having all required data within the index itself, reducing the need for additional table lookups and thus enhancing overall query execution speed.
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