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Guru's Guide to SQL Server Architecture and Internals, The by Ken Henderson

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Knowledge Measure

  1. True or false: If you create a clustered index with a nonunique key, SQL Server automatically “uniquefies” it.

  2. Provided an index exists on col, can the optimizer use it to service the WHERE clause predicate col <> 1?

  3. Explain the difference between selectivity and cardinality.

  4. What is the function of the bookmark lookup operator?

  5. True or false: When an index is created, its fillfactor setting affects the number of rows stored on every page in the index's B-tree except the root page.

  6. What is the maximum number of steps in an index's statistics histogram?

  7. What column in sysindexes stores an index's statistics?

  8. What DBCC command can you use to list the fragmentation for an index?

  9. What stored procedure can you use to affect the types of ...

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