<ul><li>A clustered index defines the physical order of data in a table, while non-clustered indexes store a copy of the indexed column values along with a pointer to the actual data location.</li><li>Indexes offer benefits for SQL Server performance, including faster lookups and efficient searching on specific columns.</li><li>The choice of indexing strategy depends on factors like query patterns, data volume, and table structure.</li><li>Indexes require maintenance and optimization to ensure effectiveness and prevent performance degradation.</li></ul>

Basic index strategy for SQL Server table

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