mongodb mongodb

First, installation and operation1. Download:Official: Https://www.mongodb.com/download-center?jmp=docs&_ga=1.61677796.930985429.1478502988#community2. InstallationDownload the 32-bit or 64-bit. msi file based on your system, double-click the file

relational databases Follow acid rulesTransactions are transaction in English, similar to real-world transactions, and have the following four features:1, A (atomicity) atomicityAtomicity is easy to understand, that is, all operations in a

Install and uninstall the installationUse homebrew to install on Mac Update the package database for homebrew:brew update Installation:brew install mongodb Then the following will appearUpdatingHomebrew...==>Downloading

Environment configuration: If you want to use MongoDB in a Java program, you need to make sure that you have installed the Java environment and the MongoDB JDBC driver.First you must download the MONGO Jar package:

MongodbConceptual AnalysisNo matter what database we learn, we should learn the basic concepts, the basic concept in MongoDB is a document, a collection, a database, we introduce each one.The following table will help you understand some of the

What is a replication set? A replica set (replica sets) is an additional copy of the data that is the process of synchronizing data across multiple servers, which provides redundancy and increases data availability, and enables recovery of

What ' s the MongoDBMongoDB is a product between a relational database and a non-relational database, and is the most versatile and most like relational database in a non-relational database. The data structure he supports is very loose and is a

Introduction: Large data volume and throughput of the database will be a single-machine performance of a large pressure, a large number of data query will be a single CPU exhausted, the large amount of data on the single-machine storage pressure,

OverviewMongoDB shards are a way to store data using multiple servers to support huge data stores and manipulate data. Shard Technology can meet the demand of a large number of MONGODB data volume, when a MongoDB server is not enough to store

Introduction: Large data volume and throughput of the database will be a single-machine performance of a large pressure, a large number of data query will be a single CPU exhausted, the large amount of data on the single-machine storage pressure,

MongoDB Replica set: (There are two cases, master-slave replication, replica set)I'm going to tell you this time. MongoDB replica set, the occurrence of replica set can effectively guarantee MongoDB single point problem, to the robustness of data

about MongoDB MongoDB is a NoSQL database based on Distributed file storage Written by the C + + language, stable and high performance Designed to deliver scalable, high-performance data storage solutions for WEB applications

MongoDB Shard In MongoDB there is another cluster, that is, the Shard technology, can meet the requirements of a large number of MONGODB data volume growth. When MongoDB stores massive amounts of data, a machine may not be enough

MongoDB Shard Overview 1, what is a shard High data volume and throughput of the database application will be more pressure on the performance of the single machine, large query volume will be a single CPU exhausted, large amount of data on

When we delete a document or collection from MongoDB, MongoDB does not release the disk space that is already occupied, and it maintains a data file that has occupied disk space, although there may be a large and small list of empty records in the

1. Download the websiteAddress: Http://www.mongodb.org/downloadsMONGODB-LINUX-X86_64-2.4.9.TGZ (64 latest version so far)2. DecompressionSwitch to the download directory, command line input: Tar zxf mongodb-linux-x86_64-2.4.9.tgz3. Create database

About MongoDB, not much to say, I would also like to install the experience.MongoDB InstallationI installed the version: mongodb-win32-i386-2.6.71, set up the folder in the D disk d:\mogondb, create folders d:\mongodb\data\db, D:\mongodb\data\log,

In order to save the user data and business data for a site, a database is usually required. MongoDB and node. JS are particularly well-matched because MongoDB is a document-based, non-relational database that is stored in Bson (the lightweight

Not much to say directly on the codeConnection string:{ "AppSettings": { "mongodb" " mongodb://user name: Password @ip Address: port number " }}Main code:1 usingABCDEFG. Config;2 usingMongodb.driver;3 usingSystem;4

installing MongoDB on the CentOS71 connect to CentOS7 server via SECURECRT;2 Go to the/usr/local/directory:Cd/usr/local3 Create the Tools directory under the current directory:Mkdir-p Tools4 enter into the Tools directory:CD Tools5 Download the