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Blogs from Suhas
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Internals of Database Snapshot – Part 2: Snapshot and the Buffer Pool
In my earlier post, we have seen what Database Snapshots are, and how the Database Snapshots are maintained by the SQL Server Database Engine. In this post we will see how the data and index pages, belonging to the Snapshot, are managed in the Buffer Pool. Before we start drilling down further, let me...
2 Aug 2011
Internals of Database Snapshot
In this post, we will explore the internals of Database Snapshot. Most of this information is already available in the Internet, in the posts authored by the SQL Server Development Team and the CSS Escalation Team; however, through this post we will attempt to consolidate all of these information for...
31 Jul 2011
Advanced Performance Tuning – 4 :: Designing for better performance contd…
Few months back, I was working with one of my customers, who was engaged by his client to design a Survey Module. Nothing very fancy about the module, but the kind of reports that were to be delivered made it really tricky. Let me explain the requirements first: When customers click on a Survey Link...
15 Jul 2011
Advanced Performance Tuning – 3 :: Designing for better performance
If you have read my earlier post , you might be saying “Heck! This guy loves to post questions without providing proper answers!” Believe me, that is not my intention. My intention here is to help you understand common mistakes that people make, so that you can avoid them in your projects. The biggest...
14 Jul 2011
Advanced Performance Tuning – 2 :: Which side of the operator
If you have read my earlier blog post on the Importance of data-types , you might be wondering, “What the heck is going on here?” I had already written in that post the reason behind the slow performance – the EmpCountry column in the Employee table is CHAR(2) which cannot be directly compared with NCHAR...
13 Jul 2011
Advanced Performance Tuning – 1 :: Importance of data-types
Why did we develop DBMS systems? Not just for storing data – but also to be able to search for and retrieve stored data, and we define what our search criteria should be. This was probably true a couple of decades back, but we have come a long way now. With the huge advancement of technology...
12 Sep 2010
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