SQL Server 2005 Express Edition

Microsoft SQL Server 2005 Express Edition is a powerful and reliable data management product that delivers rich features, data protection, and performance for embedded application clients, light web applications, and local data stores. Designed for easy deployment and rapid prototyping, SQL Server Express will be available at no cost, and be free to redistribute with applications. Because it is part of Windows Server System, SQL Server Express is designed to integrate seamlessly with your other server infrastructure investments.