How do indexes improve SQL query performance?

22 Feb How do indexes improve SQL query performance?

Posted at 15:51h in General Questions by

1) How do indexes improve SQL query performance?

2) How can stored procedure design improve query times in a data mart?

3) Why/How does de-normalization of a data mart design improve performance of queries?

Architectures: Answer 1 of 2 (include question number in post):

1) What is a different between Client-Server vs. Distributed Architecture?

2) What are some primary features of a 3-tier architecture design?