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Paul S. Randal and Kimberly L. Tripp are a husband-and-wife team who own and run SQLskills.com, a world-renowned SQL Server consulting and training company. They are both SQL Server MVPs and Microsoft Regional Directors, with over 30 years of combined experience on SQL Server. Paul worked on the SQL Server team for nine years in development and management roles, writing many of the DBCC commands, with responsibility for core Storage Engine for SQL Server 2008. Paul writes extensively on his blog (SQLskills.com/blogs/Paul) and for TechNet Magazine, where he is a Contributing Editor. Kimberly worked on the SQL Server team in the early 1990s as a tester and writer before leaving to found SQLskills and embrace her passion for teaching and consulting. Kimberly has been a regular at worldwide conferences since she first presented at TechEd in 1996, and she blogs at SQLskills.com/blogs/Kimberly. Paul and Kimberly have written Microsoft white papers and books for SQL Server 2000, 2005, and 2008, and are regular, top-rated presenters worldwide on database maintenance, high availability, disaster recovery, performance tuning, and SQL Server internals. Together they teach the SQL MCM certification throughout Microsoft. In their spare time they like to find frogfish in remote corners of the world.
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24 What does it mean to be a DBA
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If you ask ten database administrators (DBAs) what their job roles are, you ll get ten different answers. For example, one organization may need a DBA to manage the day-to-day administration of SQL Server instances, whereas another organization may want a DBA to write both Transact-SQL (T-SQL) and C# code. Another organization might want a DBA who specializes in SQL Server Integration Services (SSIS) packages, whereas another organization may want a DBA who specializes in database design. The job of DBA encompasses many different roles (and often job titles), and these vary widely from one organization to the next. In short, there is no standard job description for a DBA. This is partly because the job title doesn t have a long history (relational databases were first used in the 1970s, and Microsoft SQL Server Version 4.21 was released in 1993) and partly because the DBA role is quickly evolving as new technologies are released. Because there is no commonly-accepted definition of a DBA, the goal of this chapter is to describe the types of tasks and roles that DBAs commonly perform, with the aim of explaining to those new to the profession what DBAs do day-in and dayout. The first section of this chapter describes many of the tasks DBAs commonly perform. The second section classifies these tasks into specialty roles, as you will rarely find a DBA who performs all of these tasks all the time. Throughout this chapter, I try to answer the question: What does it mean to be a DBA
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Typical DBA tasks: A to Z
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DBAs perform so many different tasks that it is hard to categorize them all. The alphabetized list that follows outlines the common DBA tasks. This list is by no
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means comprehensive, and some of the tasks overlap.
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What does it mean to be a DBA
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Most organizations use some combination of in-house and third-party applications; and few of these applications work in isolation. Therefore, DBAs often have to make disparate applications talk to one another, using a database as the means of sharing data. DBAs commonly get involved in figuring out the best way to integrate applications, and often perform the integration themselves.
ARCHIVING DATA
Data grows over time and can become costly to store and difficult to manage. In addition, increased data tends to exacerbate performance problems. DBAs are often responsible for monitoring data size and growth, and determining the best way to store it. In some cases, this may include archiving seldom-used data in another database, or it might mean purging data that is no longer needed. Often, choices are limited, as company policy and government regulations can restrict how and where data is stored.
ATTENDING MEETINGS Most DBAs hate attending meetings because it detracts from work time. Meetings are a
fact of working life and, if used wisely, aren t necessarily a waste of time. With correct planning and preparation, meetings are great opportunities for improving communications. The responsibilities of the DBA are often unknown or misunderstood by coworkers, so DBAs should always take advantage of opportunities, such as meetings, to share with others what they do.
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