lets say we are under a database named :mydb and we make a collection named products
mydb> db.producsts.insert({name: "laptop", price: 50}) mydb> db.products2.insert({name: "keyboard", price: 40})
db.dropDatabase()
it deletes every collection, as we are deleting the whole data from data base using dropDatabase()
but lets say we only want to delete 1 collection (products2)
mydb> db.products2.drop()
Now Only 1 collection that we have (Products) will exist as the other one is dropped/deleted!
when done: mydb> show collections
products
---------------X----------X---------X----------------