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Everyone wants their data right now. It is the job of the DBA to monitor performance and to determine ways to optimize database performance. This can be complex, and many DBAs specialize in this area.
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PROJECT MANAGEMENT Oftentimes, DBAs find themselves in charge of a large project involving many other
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people. This could entail writing a new in-house application, or managing the migration of a data center from one location to another. DBAs with good project management skills are in high demand.
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Data is often moved from one server to another, and one of the most popular ways to perform this task is to use SQL Server replication. DBAs often research various ways data can be replicated from server to server, decide on the most appropriate method, implement replication, and then manage it after it is up and running.
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With the advent of SQL Server Reporting Services, many DBAs find themselves writing reports against databases. This might include writing the T-SQL code to extract the data, or it could include the creation and formatting of physical reports. This is a new and growing area, and some DBAs are specializing in it.
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Virtually every SQL Server has jobs that run periodically. They might include backups, data imports or exports, index rebuild jobs, and data integrity checks. DBAs are responsible for determining what jobs are needed, creating the jobs, and scheduling them.
SCRIPTING
DBAs often write their own T-SQL scripts to perform a wide range of tasks, including monitoring and maintenance. With the advent of PowerShell, many DBAs are writing PowerShell scripts to enhance their productivity.
SECURITY
DBAs control who can access data and what they can do with it. This has many aspects, including creating SQL Server logins and users, assigning permissions, moving security between servers, and implementing data encryption.
SSIS AND ETL DBAs often move data in and out of databases, and at the same time, perform transfor-
mations on the data as it is moved. This is often done for data warehouses and application integration. This process is often referred to as extract, transform, and load (ETL), and in SQL Server this is commonly performed using SQL Server Integration Services (SSIS).
TESTING DBAs frequently perform all sorts of testing. This can include testing of the following: databases, applications, management tools, and disaster recovery plans. DBAs test
because they want to ensure the high availability and integrity of their data.
TROUBLESHOOTING
Virtually every day, DBAs troubleshoot one problem or another. Often when a problem occurs, the DBA is expected to drop everything and focus on resolving the problem at hand. This can result in long hours and high levels of stress. As with many technical positions, effective DBAs are good problem solvers.
WORKING WITH TEAMMATES DBAs rarely work alone. In most cases, DBAs interact with many people, including other DBAs, developers, end users, product-knowledge specialists, vendors, accountants, hardware experts, and networking experts. Because of this, DBAs need good
people skills.
DBA specialties
DBA specialties
As you can see, DBAs perform many different tasks and take on a wide variety of roles. Usually, DBAs are generalists because they need to know a little about many different areas. On the other hand, you seldom find a DBA who is a master of all the previously described tasks. This is for two reasons. First, most people don t have the time to master every DBA-related subject. Second, there is the added burden of having to keep up with rapidly changing technology. For most people, it s impossible to carry out all aspects of the DBA role. To become a successful DBA, you don t have to know everything there is to know about SQL Server. In fact, you have a much better chance of becoming a successful DBA if you narrow your focus and specialize in a handful of SQL Server subjects. In this section, we take a look at some of the common areas in which DBAs specialize.
DBA SYSTEM ADMINISTRATOR The DBA system administrator is a generalist who knows a little about many different subjects. Also known as a production DBA, the DBA system administrator is generally in charge of setting up, configuring, and maintaining test and production SQL Server
instances. This can include such routine tasks as monitoring, performance tuning, backups and restores, security, creating jobs, and so on. In medical terms, think of the DBA system administrator as the general practitioner. All of the other DBA specialists are more like medical specialists.
DBA DATABASE ARCHITECT Think of a DBA database architect as the employee who sees the big picture of data
storage and access in an organization, and whose job it is to research the organization s data needs, research the available options, and then recommend policies the organization should implement. In many organizations, the title of database architect is another name for the lead DBA, DBA manager, or DBA project manager.
DBA DATABASE DESIGNER DBA database designers focus on creating new database schemas. They define user
needs and requirements, develop logical database designs, create physical databases, and so on. In most cases, the DBA database designer works with DBA developers, or other developers, to develop and maintain applications.
DBA DEVELOPER The DBA developer writes code, be it T-SQL scripts, stored procedures, functions, Common Language Runtime (CLR) objects, or any other kind of code that is used to access SQL Server data. Often, the DBA developer works with DBA system administrators, DBA database designers, project managers, and other developers to develop and
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