Business today demands a different kind of data management solution. Performance, scalability, and reliability are essential, but businesses now expect more from their key IT investments. SQL Server exceeds dependability requirements and provides innovative capabilities that increase employee effectiveness, integrate heterogeneous IT ecosystems, and maximize capital and operating budgets. SQL Server provides the enterprise data management platform your organization needs to adapt quickly in a fast-changing environment. With the lowest implementation and maintenance costs in the industry, SQL Server delivers rapid return on your data management investment. SQL Server supports the rapid development of enterprise-class business applications that can give your company a critical competitive advantage. Benchmarked for scalability, speed, and performance, SQL Server is a fully enterprise-class database product, providing core support for Extensible Markup Language (XML) and Internet queries.
For a comparison of SQL 2005 products please visit Microsoft's website at http://www.microsoft.com/sql/prodinfo/features/compare-features.mspx