Node MongoDB database opens and operates

After installing the MONGO database in the installation database of the drive letter, such as the C disk new folder called MONGOs such as C:\mongos

Open the first Small black window input Mongod-storageengine Mmapv1-dbpath C:\mongos This is the warehouse of the database

Open a second small black window input MONGO

See the admin.0 and local.0 appear in the C-drive MONGOs folder to indicate that they have been installed.

1. View the database

Show DBS------View the database

2, using and creating a database there is no right to create

Use students-----into the database

3, view collection (table)

Show Collections---View collections in the Database (table)

4, creating a collection (table)

Db. The set name is entered without creating a db.xuehao------Create a collection (table)

5, add a data Db.xuehao.insert ({"num": "20180809"})

Db. Collection. Insert ({})

6, important Import data (import multiple data) as the data is imported into the database it is created successfully inside the collection (table) also created successfully

First, CTRL c disconnects the database

Step two, create a new TXT file outside the content as follows: multiple data

For example: Create a new A.txt file in the D disk with the following contents:

{"src": "Http://127.0.0.1/image/c6.jpg"}
{"src": "Http://127.0.0.1/image/c8.jpg"}
{"src": "Http://127.0.0.1/image/c9.jpg"}

Third, in the case of ensuring that the database warehouse is open: Open the Data Warehouse mongod-storageengine Mmapv1-dbpath C:\mongos This is the repository of the database

And open a little black window. Input: Mongoimport--db shujukuming--collections biaoming--drop--file d:/a.txt

The upper d:/a.txt can be dragged directly to the small black window.

This creates a new database named Shujukuming (table) named Biaoming and imports the contents of the file inside the a.txt.

6,

View all data under collection-----db.xuehao.find ()

Db. Collection. Find ()

Node MongoDB database opens and operates