The basic operation of MongoDB learning

I. Creating Databases and Tables

Execute MONGO in the bin directory into MongoDB

Build Library

Use demo1 to create a database , mango syntax, using, if you currently have this database will be used,

If not, create it. But it's not going to show up right now, we need to create a table

Build a Collection

db.createcollection ("") in the Mango , the table is the Set collection

Finally, we show DBS to see the database we created.

Show collections

Show tables

Delete Library

DB .     dropdatabase  Deleting the current database
Delete a table or say delete a collection

DB View Current Database
Db.t1.drop () Delete

Second, the operation of the collection

Created: Db.createcollection ("QueryLog")

Insert: Db.queryLog.insert ({uid: "2131", ID: ' EA10 '})

Enquiry: Db.queryLog.find ()

The basic operation of MongoDB learning