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  • It’s Data Tier Application and Data Application Component

    OK – In SQL Server 2008 R2 we did “re-use” an acronym or two (DAC and DTA), but it’s important to remember there are actually two parts to this new feature. One is the Data Application Component (DAC) and the other is the Data Tier Application (DTA). The DAC is the file created for a DTA. In SQL Server 2008R2 and Visual Studio you’ll find there ...
    Posted to Buck Woody (Weblog) by BuckWoody on December 23, 2009
  • SQL Server Best Practices: Protect CmdExec

    In SQL Server, there are times that you need to do things in the operating system, and to allow that there is a feature called CmdExec. This is not always a good thing –whenever you leave the confines of SQL Server and go out to the operating system, you can cause issues, not the least of which are security-related. This best practice is ...
    Posted to Buck Woody (Weblog) by BuckWoody on December 3, 2009
  • After the Upgrade, it runs differently…

    I got a question yesterday in the mail that I thought I would just answer here in a broad context. While I can’t troubleshoot or do performance tuning from a distance, there are some interesting concepts and suggestions this e-mail brings up: “I have recently seen a change from SQL Server from 2005 to 2008 in where it handles CASE statements ...
    Posted to Buck Woody (Weblog) by BuckWoody on December 1, 2009
  • Aren’t DBA’s Just System Admins for Databases?

    Last week I ran into an argument I’ve had since I left the mainframe space decades ago. A developer told me “DBA’s don’t design databases.” The inference was that DBA’s (i.e., Database Administrators) only worry about hardware, security, OS, database backups, things like that. He seemed amazed that a DBA would ever do “data” work. It may be the ...
    Posted to Buck Woody (Weblog) by BuckWoody on November 30, 2009
  • Code that Writes Code

    I have scripts that re-create my databases for testing and development purposes. But sometimes I want to take the data from a set of tables and move it as well – I could use SSIS, or a SELECT INTO statement, but what if I want to “re-set” the data to a point in time? In other words, load it with some “base data”? I thought this might be a good ...
    Posted to Buck Woody (Weblog) by BuckWoody on November 25, 2009
  • Changing the Primary Key After You Have Data

    Yesterday I blogged about changing a Primary Key (PK) during the design phase, and before you have data in the database. Even then, it’s not trivial to change the data type or column(s) that make(s) up the PK. When you have data in that Primary Key and/or you have Foreign Keys (FK) that point to a PK field, this becomes a much more involved ...
    Posted to Buck Woody (Weblog) by BuckWoody on November 24, 2009
  • Please Vote: Windowing Enhancements in SQL Server

    Back in January 2007, SQL guru Itzik Ben-Gan posted a series of MS Connect enhancement requests concerning windowing function enhancements.  Those who have used the ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE() functions on SQL 2005 and 2008, you already know how useful they are.  They simplify code and can improve performance ...
    Posted to Michael Coles: Sergeant SQL (Weblog) by Mike C on November 19, 2009
  • "SQL Server MVP Deep Dives" Book Available for Early Access/Pre-Orders

    The MVP authored book, SQL Server MVP Deep Dives is now available for early access and pre-orders at http://manning.com/nielsen/.  The book is divided into 5 sections that cover everything from building a proper relational database to developing BI solutions: 1. Database Design and Architecture 2. Database Development 3. Database ...
    Posted to Michael Coles: Sergeant SQL (Weblog) by Mike C on September 16, 2009
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