Question Bank for SQL Database Optimization Set 1

Thursday, July 23, 2009




Database Optimization
======================
What are indexes?
How will you tune your queries?
How will you find slow running queries?
What are B-Trees?
I have a table which has lot of inserts, is it a good database design to create indexes on that table?
What are "Table Scan's" and "Index Scan's"?
What are the two types of indexes and explain them in detail?
What is "FillFactor" concept in indexes?
What is the best value for "FillFactor"?
What are "Index statistics"?
How can we see statistics of an index?
How do you reorganize your index, once you find the problem?
What is Fragmentation?
How can we measure Fragmentation?
How can we remove the Fragmented spaces?
What are the criteria you will look in to while selecting an index?
What is "Index Tuning Wizard"?
What is an Execution plan?
How do you see the SQL plan in textual format?
What is nested join, hash join and merge join in SQL Query plan?
What joins are good in what situations?


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