MongoDB Study notes (1)

Overview and installation of MongoDB

Basic Knowledge start the Wiredtiger engine

Creating a database

Use {dbname} to view all current databases

Show DBS
PS: If the use of the database is empty, can not be displayed through the show DBS Check and delete and change

Suppose DB name is for you
Add:db.you.insert
Delete: db.you.remove
Change:db.you.update
Check:db.you.find

Data Type

Script

MONGO through the JS script to query the appropriate information

load script on Shell interface via load
Add startup Content

Modify ~/.mongorc

the use of editor

Add editor environment variable in 1.~/.BASHRC:
Editor=/usr/bin/vim

The following line is added to the 2.~/.MONGORC:
Editor= "/usr/bin/vim"

In the 3.mongo shell, you can invoke vim to modify data by using the edit {variable name}:

The following variable increases sex

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