In the old days, the responsibility of database administrators (DBAs) was to make sure every byte of data was stored safely, and data was always available for quick delivery to business applications. Today, database system professionals have a much more complex job. Not only are they the gatekeepers of the system, but they are also responsible for a variety of complex tasks, such as
Database professionals must be efficient with the tools to support these complex tasks. When they are faced with a business requirement, they need to identify database tasks quickly and choose the right tool to perform these tasks. These database tasks are no longer limited to just the relational database. SQL Server now has a family of products that database professionals must support and maintain to meet business requirements.