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Create an index on a document in MongoDB
Answer:
To create an index on a document in MongoDB, you can enter the shell and execute the statement like:
db.test.ensureIndex({ "fieldName": 1 })
(Assume you need to create index on fieldName of the test collection.)
That's easy?
Drop a database in MongoDB
Answer:
Assuming you are going to drop the `test` database in MongoDB, follow the steps below to drop (delete) it.
> use test
switched to db test
> db.dropDatabase()
{ "dropped" : "test.$cmd", "ok" : 1 }
