Microsoft SQL 2008 R2 is our recommended database platfom. Microsoft SQL 2008 is easier to use and is the most popular and broadly supported database server for the small to medium business. Database mirroring can help you maintain high-availability of your data in the event of storage failure. New replication features enable your database application to reach even laptop users that don't have the luxury of a reliable internet connection.
For web-based applications including many freely available open-source projects MySQL is the leading platform. MySQL is available in free and commercial versions.
Microsoft SQL 2008 and MySQL are both capable database servers. When researching applications, it is important to know what database server technology will be used. Selecting a scalable database platform is critical to have a system that will grow with your business.