MongoDB

1, how to start the MongoDB database?: After installing MongoDB, the folder appears as follows:MongoDB opens 27017 port by default, open browser, enter http://localhost:27017/, display as follows:To start a database step:(1) CD

Original link: http://page.factj.com/blog/p/4078MongoDB has been popular for a long time, compared to MySQL, exactly what scenes need to use MongoDB? Here are some summaries.Higher write loadBy default, MongoDB is more focused on high data write

1. Delete the old document Db.remove ({}) first;2. Remove the members to be cleaned from the replica set:(1) Primary server in the replica set (/opt/mongo1/bin/mongo--port 27017)(2) Rs.remove ("192.168.1.54:27019")3. Close the MongoDB server you

First, let's talk about the use of $elemMatch:{ _id: 1, results: [[+ ]] { _id: 2, results: [[], +/- ] } $elemMatch is that at least one element in the array matching document satisfies all the conditions in

The project has been replaced with PHP's latest MongoDB driver, but this driver is only a layer of native interface packaging, some commands even to use executecommand construction, like the following aggregate method.The first package

1. Download the installation packagewget http://fastdl.mongodb.org/linux/mongodb-linux-i686-1.8.2.tgzUnzip the package after download is completeTar zxf mongodb-linux-i686-1.8. 2. tgz2. Install ready to move MongoDB to the/usr/local/server/mongdb

MongoDB installation and start-upDownload Link: http://www.mongodb.org/downloadsFirst step: Download the installation packageStep Two: Create a new directory "D:\Mongodb" under D, unzip the downloaded installation package and copy the bin directory

MongoDB Delete Database syntaxThe syntax format for MongoDB database deletion is as follows:DB. Dropdatabase() Delete the current database, which is test by default, and you can use the DB command to view the current database name.InstanceThe

Personal testing is often developed using the shell to start MongoDB, and when you enter the project team to develop tests, you must allow MongoDB to start with the system.1. Write the start command sudo vim/etc/rc/local1-1 MongoDB's Start command1-2

After the successful start of MongoDB, and then open a command line window input MONGO, you can do some of the database operations.1. Enter Help to see the basic Operation command:Show DBS: Display database list Show Collections: Displays a

Full-Text IndexingBuild method:--Create a full-text index on the key field of the articles collection Db.articles.ensureIndex ({key: "text"})--Key_1,key_ in the articles collection 2 Create full-text index on field db.articles.ensuereIndex ({key_1: "

[[email protected] bin]$ pwd/usr/local/mongodb/bin[[email protected] bin]$ ls-ltotal 207696-rwxr-xr-x 1 Bsondump #一个debug工具而不是一个备份工具, the Bson format can be converted into a JSON format that can be recognized. -rwxr-xr-x 1 MONGO

First: Introduce the public key in the local systemsudo apt-key adv--keyserver hkp://keyserver.ubuntu.com:80--recv EA312927Two: Then add a MONGO address from the local source.ubuntu12.04Echo "Deb Http://repo.mongodb.org/apt/ubuntu

Transferred from: http://quentinxxz.iteye.com/blog/2149440One, under normal circumstances, should not have this demandFirst of all, we should have a concept, the title of this problem, in most cases is a pseudo-proposition, should not be mentioned.

1. Install the MONGBODB installation package (open source free yo)Under the Mac Brew install MongoDB can be installed to wait a while, about 200M2. CD to Mongbodb folder-if installed with homebrew/usr/local/cellar/mongodb/(version number)3. Create a

DB Shell Data operationShell command manipulation syntax is similar to JavaScript, in fact, the bottom of the console query statements are done with JavaScript script.#数据库 operation1. Help View command Prompt> help> db.help ();> db.yourColl.help ();>

This article describes how to use the client tool to make a remote server data backup locally.Take the client tool Mongovue as an example to explain:1. Connect the local server and the remote server database first2. In the local server (127.0.0.1),

Package Com.moonlit.example;import Com.mongodb.basicdbobject;import com.mongodb.bulkwriteoperation;import Com.mongodb.bulkwriteresult;import Com.mongodb.db;import Com.mongodb.dbcollection;import com.mongodb.DBCursor; Import

How to view commands:1. Run Db.listcommands () in the shell2. Accessing the administrator interface in the browser: http://ipaddress:28017/_commandsThe following are the most frequently used commands in MongoDB, as follows:Command: BuildinfoFormat: {

1. Download MongoDB installation package, the official website download speed is relatively slow, Baidu Cloud installation package Link: http://pan.baidu.com/s/1geVQ8Xt Password: 8o5i2.python installation Pymongo I am in the Python Scripts directory