Yes.
Create a new library with a name to yor liking. You'll have a new db file with the new name. Then you copy the mobilesheets.db to a duplicate (technically you could use one of the backup files as well if you know there wasn't a relevant change in it), delete the new db file and rename the copy to the name of the deleted file you should have two db files you can switch between in MSP and delete away in them to your liking. (I would always keep a backup of the original db file though).
In Windows it's no problem to do that in the MSP dir. Under Android depending on the version it might be a bit more difficult with the file permissions and expose database though,
Create a new library with a name to yor liking. You'll have a new db file with the new name. Then you copy the mobilesheets.db to a duplicate (technically you could use one of the backup files as well if you know there wasn't a relevant change in it), delete the new db file and rename the copy to the name of the deleted file you should have two db files you can switch between in MSP and delete away in them to your liking. (I would always keep a backup of the original db file though).
In Windows it's no problem to do that in the MSP dir. Under Android depending on the version it might be a bit more difficult with the file permissions and expose database though,