MySQL - Awesome, professional & free
Another 'spoiler' attempt from Microsoft again waking up to the fact that others do the job better, cheaper, faster, smaller and platform independent! Using money and muscle where vision, invention, performance and reliabilty have stolen a march on them.
Don't touch it - use MySQL instead. It is fully featured, fast and scalable. It works on your laptop and it works in a server farm. It is used by more ISPs and powers more websites than any other database. I wonder why Microsoft might be interested....?