MonGo--- installation and its basic operation

1. Install the Mongo database:

The latest version officially available at the time of release of this article is 1.6.5, which will be used in this tutorial unless otherwise stated.

Step 1: download the installation package: official download address ← Click here, if it is a win system, pay attention to the 64-bit or 32-bit version, please choose the correct version.

Step 2: create a new directory "D:\ MongoDB", extract the downloaded installation package, find all the .exe files in the bin directory, and copy them to the directory you just created.

Step 3: create a new "data" folder under the "D:\ MongoDB" directory, which will serve as the root folder for data storage.

Configure the Mongo server:

Open a CMD window and enter the command as follows:

> d:

> cd D:\ MongoDB

> mongod-- dbpath D:\ MongoDB\ data

Enter: http://localhost:27017/ in the browser, and you can see the following prompt:

You are trying to access MongoDB on the native driver port. For http diagnostic access, add 1000 to the port number

2. Basic operations:

Create\ use database:

> use mongotest

Switched to db mongotest

Display the data sheet:

> show tables

Insert data:

> item= {"Key": "1", "text": "wokao", "number": 3}

{"Key": "1", "text": "wokao", "number": 3}

> db.wang.insert (item)

Query data:

> db.wang.find ()

{"_ id": ObjectId ("52c7812912eae9cca2c31826"), "Key": "1", "text": "wokao", "number": 3}

> item= {"Key": "1", "text": "wokao"}

{"Key": "1", "text": "wokao"}

> db.wang.insert (item)

> db.wang.find ()

{"_ id": ObjectId ("52c7812912eae9cca2c31826"), "Key": "1", "text": "wokao", "number": 3}

{"_ id": ObjectId ("52c7814912eae9cca2c31827"), "Key": "1", "text": "wokao"}

> show tables

System.indexes

Wang

> db.system.indexes.find ()

{"v": 1, "key": {"_ id": 1}, "ns": "mongotest.wang", "name": "_ id_"}

Data deletion:

> db.wang.remove ({"_ id": ObjectId ("52c7812912eae9cca2c31826")})

> db.wang.find ()

{"_ id": ObjectId ("52c7814912eae9cca2c31827"), "Key": "1", "text": "wokao"}

Data modification:

> db.wang.find ()

{"_ id": ObjectId ("52c7814912eae9cca2c31827"), "Key": "1", "text": "wokao"}

> var t=db.wang.findone ({"Key": "1"})

Sat Jan 04 11 Property 42 findone' of object mongotest.wang is not a function 29.671 TypeError:

> var t=db.wang.findOne ({"Key": "1"})

> t.text= "wo shi ni yeyebooks!"

Wo shi ni yeye!!

> db.wang.update ({"Key": "1"}, t)

> db.wang.find ()

{"_ id": ObjectId ("52c7814912eae9cca2c31827"), "Key": "1", "text": "wo shi ni yeyebirds!"}