It's a common problem SQL Server (especially) DBAs have: how do I find out when the last time this database was used? SQL Server is so prone to sprawl, and so many applications install so many databases; it's hard to keep track of what is in use and what is not. This is especially true when you're new on the job.
Here we'll look at a quick-and-dirty method for getting a guess at whether a database has been used. This comes with a lot of caveats and cautions, but if you're looking for some kind of evidence that a system has been used, index usage stats are one place to look.
