MongoDB

MongoDB Basic UseAfter the successful start of MongoDB, and then open a command line window input MONGO, you can do some of the database operations.Enter help to see the basic Operations Command:Show DBS: Display Database listShow Collections:

Skill one, using the right typestoring data with the right type is a great boon. Data types affect the way data is queried, the order in which data is stored, and how much space is occupied. numbers: Fields used for numbers are stored numerically. A

Nginx Support MongoDB need to add modules to compile the installation, the steps are as follows: Installing pcre-develsudo apt-get install libpcre3 Libpcre3-devsudo apt-get install OpenSSL Libssl-dev Installing Nginx-gridfsgit clone git:

Install MongoDB. : Http://www.mongodb.org/downloads Select the MSI file or ZIP package, install it in your own directory, I installed the F:\mongodb Create Folders f:\mongodb\data\db, F:\mongodb\data\log, respectively, to install the DB and

Installation Method Reference:http://php.net/manual/en/mongo.installation.phpTar Driver package Links:GitHub: Driver LinksPecl:http://pecl.php.net/package/mongoRPM Driver Package Link: http://downloads-distro.mongodb.org/repo/redhat/os/Centos,redhat

Objective:This weekend but learned a day, a little do not want to study, just finished the first two post, probably after one hours, I said in my heart, if just wrote that two blog reading over 80 I have this blog, if but, tonight will no longer

http://zhidao.baidu.com/question/157276582 because the character encoding of the MongoDB background is utf-8, and the character encoding used by the Chinese Windows CMD window is GBK (Properties-"Options-" current code page), So when you use the

After the successful start of MongoDB, and then open a command line window input MONGO, you can do some of the database operations.Enter help to see the basic Operations Command:Show DBS: Display Database listShow Collections: Displays a collection

package Mongo;import Java.net.unknownhostexception;import Com.mongodb.basicdbobject;import Com.mongodb.db;import Com.mongodb.dbcollection;import com.mongodb.DBCursor; Import Com.mongodb.mongo;import Com.mongodb.mongoexception;public class Connection

Before learning MongoDB, it is better to first understand the JSON data format, MongoDB Bson is an extension of JSON, and JSON, if you understand the JSON, it is easy to learn.And, of course, JSON is easy to get started with.(1): Insert can have two

Waste a lot of time to store data, all migrated to MongoDB, not a large number of changes is the main cause.But there was a strange phenomenon.Soon after the program ran, MongoDB is suspended animation, and another client to login to MongoDB is

Tag: Database MongoDB IndexIn the past four blogs, we attached importance to the index, including description and comparison with usage of index. Now in this blog, we'll mainly focus on the basic operation of index. Such query, remove, repair and so

From this blog, we start to talk about the "index in MONGO database", which is similar to the traditional database.  Generally speaking, if the index need to is created in the traditional database, so does MongoDB. In MongoDB, the field ' _id ' have

Enumerate traversal pointers Overviewas already mentioned, Db.collection.find () If you do not assign a variable to a VAR declaration, the first 20 records are automatically enumerated. manually Enumerate pointersIn the MONGO console, assign the

MongoDB installation ConfigurationInstallationMongoDB's website for MongoDB. When downloading, you can choose either to install the package or to compress the package.When the download is complete, double-click the installation package and install

Recently in using Mongo+tornado to do some small things, record:* MONGO built-in JS powerful, but JS debugging difficult problems are also highlighted* When the collection data volume is about 5w, more group+aggregate operation, the efficiency is

Øcollection Aggregation Collection1. Create a Clustered collection (table)Db.createcollection ("Collname", {size:20, Capped:5, max:100});2. Get a clustered collection with the specified name (table)Db.getcollection ("account");3. Get all the

MongoDB after the native installation is well-deployed1. Enter the command: Show DBS, you will find it built with two databases, one named admin, one named Local. Local does not seem to be useful, if the use of the process found the use of the local

I used MongoDB recently and it was easy to set it up and run it in accordance with development box (compiled development package, double-click installation), but I would like to refer to the documentation for Setup (using Zip package)Installing

Procedure Tform1.bitbtn7click (Sender:tobject);VarQuery,b1,b2:tbson;Buf:tbsonbuffer;Code:tbsoncodewscope;BeginIf Dbman=nil then dbman:=tdbmanage.create;Code:=tbsoncodewscope. Create (' function () {var a=db.testc.find (); return a[0].name;} ', Bson (