Microsoft SQL Server 2005 is an all-in-one relational database management system employing integrated business intelligence tools for enterprise-level data management. Data engine of Microsoft SQL Server 2005 provides relational data and structural data with more reliable storage function, with which enterprise managers are able to construct and manage data applications for higher business availability and performance. The data engine of Microsoft SQL Server 2005 is the key of enterprise database management solutions. Besides, owing to the functions of Microsoft SQL Server 2005, such as analysis, reporting, integration and notification functions, enterprise managers can work out and deploy economical and effective BI solutions, so as to widen the use of data application via score card, Dashboard, Web services and mobile devices. It is the close integration with Microsoft Visual Studio, Microsoft Office System and new development tools such as Business Intelligence Development Studio that makes Microsoft SQL Server 2005 distinguished. Being extremely competent, Microsoft SQL Server 2005 is fully qualified to serve developers, database managers, information workers and decision-makers, providing the most effective and innovative solutions. Microsoft SQL Server 2005 owns five different versions including: SQL Server 2005 Enterprise Edition (32-bit and 64-bit), SQL Server 2005 Standard Edition (32-bit and 64-bit), SQL Server 2005 Workgroup Edition (32-bit only), SQL Server 2005 Developer Edition (32-bit and 64-bit), SQL Server 2005 Express Edition (32-bit only) and SQL Server Express (freeware). Microsoft SQL Server 2005 Enterprise Edition is available for oversized enterprises to perform OLTP (Online Transaction Processing) work, extremely intricate data analysis, database and website management, etc. The comprehensive business intelligence, analysis ability and high operability (like fail-over ability) make it possible for enterprise managers to handle the work load of the key businesses. Being able to meet the most complicated demands, Microsoft SQL Server 2005 is the best choice for oversized enterprises. SQL Server 2005 Standard Edition (32-bit and 64-bit) is suitable for small or middle-sized enterprises' data management and analysis. Certain edition with highly integrated business intelligence and usability is equipped with functions serving electronic business, data warehouse and data flow solutions. SQL Server 2005 Standard Edition is an ideal choice for small or middle-sized enterprises to realize comprehensive data management and analysis. SQL Server 2005 Workgroup Edition is highly recommended for small enterprises which ask for database without any limitation of size and user amount. SQL Server 2005 Workgroup Edition can be used as front-end Web server, and be used for department or branch operation. Owning the core function of SQL Server products, Microsoft SQL Server 2005 can be easily updated to SQL Server 2005 Standard Edition or SQL Server 2005 Enterprise Edition. Certain server is featured with high reliability, powerful functions and high manageability.