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SQL Server Tutorial: Pt. 3 - Understanding What Really Happens (Internally) When a Page Split Occurs

   Chapter: Architecture: System Databases, System Tables, and SQL Server Internals
Download! Skill Level: 500 (Advanced)
Duration: 10:45
Size: 8.21MB
Versions/Editions Covered: SQL Server 2005
Added/Updated: May 02, 2007
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This is the third video of a series of 5 highly advanced and extensive videos about page splits. This incredible video houses a variety of some phenomenal information. There is some SQL Server advanced knowledge required to get the most out of this video. You can expect to see the following items within this video:
  • Introduction to SQL 2000's DBCC SHOWCONTIG() function with and without TABLERESULTS
  • Proper breakdown of the IndexName utilizing the DBCC SHOWCONTIG() function
  • Extensive review of the DBCC SHOWCONTIG() function output
  • Explanation of DBCC deprecation in SQL Server 2005
  • Introduction to SQL 2005''s Dynamic Management Objects (DM''s)
  • Proper syntax for DM''s in SQL Server 2005
  • Basic introduction to DB_ID() and OBJECT_ID() functions
  • Detailed description of the DM results including but not limited to alloc_unit_type_desc,
  • index_level, page_count, record_count
  • Basic introductory definition of how clustered indexes must return data
  • Page Split definition when working with clustered indexes accompanied with real
  • world examples
  • Introduction and explanation of the following DBCC results: bpageno, m_nextPage, m_prevPage
  • Introduction to fragementation when page splits occur
  • Advanced explanation of Page Splitting
Scott Whigham teaches us how to properly utilize different functions in SQL 2000 and 2005 when working with page splits. This video really finalizes the major functions and all of the explanations for page splitting. This is an extremely easy video to following and understand. Beginners should watch this video once now and once after you have had some further experience with SQL Server to get the full aspect of what is being taught here. All who watch this video will benefit from Scott''s excellent training skills.

NOTE: This description was written by one of our members, Wayne Leiser. Thanks, Wayne!
Tags for this video: clustered index dbcc page split  
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This video is part of the following video series: "Understanding SQL Server Page Structure: How Page Splits Affect Performance"
This essential video series will be teaching you about the different types of functions and how, why and what happens when a page splits and how it affects you!

Highlights:
  • Building a Clustered Index in TSQL Overview
  • Discussion about Page Types
  • Introduction to the use of the OBJECT_NAME() function
  • Page Types, Byte Length, Page Splits, m_freeCnt
  • Introduction to SQL 2005's Dynamic Management Objects (DMs)
  • About fragementation when page splits occur
  • Detailed explanation of the undocumented FN_DBLOG() function
  • Introduction and explanation of Housekeeping Threads and Ghost Records
To view all videos in this series, click here

About the Instructor:
Scott Whigham Scott Whigham is the founder of LearnItFirst.com, one of the web's most extensive video training libraries focusing on technical training. Scott is also an experienced consultant, trainer, and author with more than a decade of hands-on experience working with SQL Server databases, writing and debugging applications using Visual Studio, and performance tuning. Scott designed the architecture (websites, class libraries, and database) for the LearnItFirst.com websites and, most re... (Scott Whigham's full bio can be found on the About the Author page)

   
 
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9/7/2008 8:54:06 PM