SQL Server 2008 has certain limitations in comparison with the complete version: Stands out due to its security, stability and scalability.Powerful graphical management environment.Compatibility with the Transact-SQL language.If you work with databases, SQL Server 2008 Express Edition will come in very handy to manage all the information efficiently. This version is ideal if you want to work with simple projects, because it requires fewer resources and you'll be able to perform the majority of the operations that are available in the complete version. SQL Server 2008 Express is the reduced free version of the popular database management system by Microsoft.