SQL Server Deletes a database

The previous database installed in the virtual machine, today on the machine installed a SQL2008, remote connection to the virtual machine on the SQL Server, after the drop database test to delete the previous tests failed, prompting "cannot delete database ' test ', Because the database is currently in use. At that time the virtual machine just opened, I really do not understand why it is said to be in use. If restarted, too unwilling, the Internet to find a bit, found that only a few steps can be the perfect solution:

The following is the relevant code

1. Use master
2. Go
4. sp_who
6. Kill 53
8. Drop Database Test

sp_who information for current users, sessions, and processes

Locate the SPID for the session connected to the test database, and then kill XXX to kill the session.

Now the drop database test can be successfully deleted.