When using ORM tools like XPO and even more when using application frameworks like Xaf since they create the database for you you often change your objects so much that you have to drop the database in order your ORM to create it again, in order to avoid any kind of conflict.
Tired of doing that I wrote a small DxCore addin and added to expand addins. To use it you have to configure it by telling which connection string will use from your application configuration file
and bind the dropDatabase command to any shortcut key you like
eXpand is available at http://code.google.com/p/expandframework/