Is the new empty database created by mongoDB stored?

  mongodb, question

Useuse newdbCreate a new database without inserting any datashow dbsThis database will not be displayed, so it should not be added to the memory. But deleting it shows{ "ok" : 1 }That’s right, so I would like to ask if the new empty database is stored.

1. No storage
2. after passing db.dropDatabase (), execute this command test again and return {ok: 1}

use memberSystem

switched to db memberSystem

db.dropDatabase()

{ "dropped" : "memberSystem", "ok" : 1 }

db.dropDatabase()

{ "dropped" : "memberSystem", "ok" : 1 }

db.dropDatabase()

3. mongodb will not judge whether the database exists when deleting, but directly deletes it. As long as no error is reported, it will return {ok:1}, even if there is no such database.