The document discusses performance tuning in SQL Server 2000. It covers index analyzing, the different types of disk pages and indexes in SQL Server 2000. It provides tips for index creation and query design to improve performance, such as using indexes to filter queries and avoiding functions in WHERE clauses. The overall goal is to help optimize queries and tune database performance.

1. Technical Integration Department System Analysis & Training Group Jerry Yang November 11, 2005 SQL Server 2000 Research Series Performance Tuning

2. Introduction SQL Server 2000 Index Analyzing The Way to Achieve Goal Summary Agenda

3. Introduction SQL Server 2000 Index Analyzing The Way to Achieve Goal Summary Performance Tuning

4. What Is DB Tuning ? Hardware Part Software Part Why It Is So Important ? Case Study 1. General Nutrition Companies Case Study 2. SYSCOM Case Study 3. GSS Introduction

5. Introduction SQL Server 2000 Index Analyzing The Way to Achieve Goal Summary Performance Tuning

6. SQL Server Managers SQL Server 2000 Index Analyzing Query Executer

7. Eight Types of Disk Pages Bulk Changed Map Pages Data Pages Differential Changed Map Pages Global Allocation Map (GAM & SGAM) Pages Index Allocation Map (IAM) Pages Index Pages Page Free Space (PFS) Pages Text/Image Pages SQL Server 2000 Index Analyzing

8. Eight Types of Disk Pages Bulk Changed Map Pages Data Pages Differential Changed Map Pages Global Allocation Map (GAM & SGAM) Pages Index Allocation Map (IAM) Pages Index Pages Page Free Space (PFS) Pages Text/Image Pages SQL Server 2000 Index Analyzing

9. Concept of B-Tree Three Kinds of Nodes Root Node Intermediate Nodes Leaf Nodes Pointer Data Bookmark Real Data SQL Server 2000 Index Analyzing

10. SQL Server Index Types Clustered Index ─ Please See Example ─ SQL Server 2000 Index Analyzing

11. SELECT * FROM People WHERE ID = 3 ID Name Sex City 1 2 3 4 Alex John Bill Mary M M M F Taipei Tainan Keelung Taipei Table Name: People Clustered Index: ID Non-Clustered Index: Name

12. SQL Server Index Types Non-Clustered Index ─ Please See Example ─ SQL Server 2000 Index Analyzing

13. Bookmarks SELECT * FROM People WHERE Name = ‘Bill’ ID Name Sex City 1 2 3 4 Alex John Bill Mary M M M F Taipei Tainan Keelung Taipei Table Name: People Clustered Index: ID Non-Clustered Index: Name

14. ID Name Sex City 1 2 3 4 Alex John Bill Mary M M M F Taipei Tainan Keelung Taipei Table Name: People Clustered Index: ID Non-Clustered Index: Name

15. Introduction SQL Server 2000 Index Analyzing The Way to Achieve Goal Summary Performance Tuning

16. Index Creation Tips Frequency (Where, Order By, Group By) Selectivity Indexed Column Size (Integer, Character) OLTP (Online Transaction Processing) & OLAP (Online Analytical Processing) The Way to Achieve Goal

17. Query Design Tips Use Index Ex: Column Employee_ID is used to define an index. The Statement “… WHERE Employee_ID >= 50” will use this index. Use “>=” And “<=” To Replace… BETWEEN … AND … <> , != Avoid To Use Calculation In WHERE Clause Ex: WHERE Last_Name + First_Name = ‘George Bush’ The Way to Achieve Goal

18. Query Design Tips (Cont.) Avoid To Use Function In WHERE Clause Ex: WHERE ABS(Account_Money) >= 50000 Follow SQL Server’s Decision The Way to Achieve Goal

19. Introduction SQL Server 2000 Index Analyzing The Way to Achieve Goal Summary Performance Tuning

20. What Do You Need To Know Today… Something About DB Tuning Analysis of Index B-Tree Pages Clustered Index Non-Clustered Index Index & Query Design Tips Summary

21. Fundamentals of Database Systems Author: Elmasri / Navathe Publisher: Addison-Wesley Publishing Company Inside of Microsoft SQL Server 2000 Author: Kalen Delaney Publisher: Microsoft Press Reference

22. Any Question?