Louis has been in the IT industry for over 20 years as a corporate database developer and data architect. Currently he is the Data Architect for CBN in Virginia Beach. Louis has been a Microsoft MVP since 2004, and is an active volunteer for the PASS locally and globally. He is the author of a series of SQL Server Database Design books, most recently Pro SQL Server Relational Database Design and Implementation.
Last week, I presented a query to view I/O pressure, and (to me) more usefully, look at it in a slice of time, like when doing a performance test. Here is a a very similar solution for index usage using the sys.dm_db_index_usage_stats dynamic management views. I will probably do several more of these types of … Read more
The sys.dm_io_virtual_file_stats dynamic management function returns I/O statistics for data and log files [MDF and LDF file], with two parameters, one for database_id and another for the file_id. This function will help you to identify I/O file level. I was led here when doing a search because we were getting enormous amounts of disk … Read more
Microsoft has built a little site for searching the books online on the web (which gives you links that are more readily shared with others): http://search.live.com/macros/sql_server_user_education/booksonline That is nice, but what is nicer is that you can create your own search macros and save them.. Just click the “create your own search engine” and go … Read more
If database design is done right, then the development, deployment and subsequent performance in production will give little trouble. A well-designed database 'just works'. There are a small number of mistakes in database design that causes subsequent misery to developers, managewrs, and DBAs alike. Here are the ten worst mistakes
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