MongoDB

When you encounter a problem in your work, you need to take some of the qualifying data out of a collection and process some of the fields one at a line. MongoDB Terminal support directly write JS code, functions, you can also run JS file.1 first

---------------------MongoDB basic Operation---------------------1. MongoDB CREATE DATABASEUse database name: Switch to the specified database and create the corresponding database when inserting the first bar data. Show DBS: Displays all the

Test environment: 192.168.1.55, stand-aloneData Volume: 40 million or so.Test: Db.repairedatabase EffectDb.compact effectGet information about the database by using the stats command:Db.stats () {"DB": "Test","Collections": 7, Number

MongoDB Installation and ConfigurationFirst step, go to MongoDB website to download MongoDB databaseThe download version is based on your operating system,MongoDB such as: mongodb-linux-x86_64-3.2.10.tgzStep two, install the virtual machineVirtual

---------------------MongoDB installation Environment---------------------1, Mongodb:http://www.mongodb.org/downloads2. MongoDB GUI visualization tool:: https://robomongo.org/3. Installing MongoDB Tutorial:

MongoDB is a general-purpose nosql that has been widely used in many places. Next we look at how to use the MongoDB database in node. js.1. Environment installationFirst from the MongoDB official website download, install, configure the environment

Test environment: WindowsI. Exporting dataf:\dbsoft\soft\master\bin>mongoexport/h 127.0.0.1/port 50000/d testdb/c tb1--type=csv/f _id,name,age/o F:\DbSoft\mongodb\export_file\abc.dat2015-12-02t15:01:06.787+0800 Connected

Demand:　　Do not know if you have encountered such a demand: their own server for the protection of database security, the need to encrypt the stored data protection. In case the database is taken, no one else can get the contents of the database.

Software version 64-bit: $ wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel62-3.2.0.tgz    Mongodb-linux-x86_64-rhel62-3.2.0.tgz Server 3:    192.168.1.20(master[PRIMARY])    192.168.1.21(slave[Secondary])    192.168.1.22(Arbitration [

1. mysql and MongoDb　　MySQL and MongoDB are common open source Databases , but MySQL is a traditional relational database, MongoDB is a non-relational database, also known as a document database, is a NoSQL database. They each have their own merits,

1. Call.bat to Use the This TOOLS* * *1: Call Test.bat [Yestoday'sdata] ****rem * * * * * * * * * 2: Call Test.bat begin_date

Requirements : incrementally extract MongoDB data and load it into MSSQLDue to the inability to use custom SQL for relational databases , the main problems are : Query and parameter control for incremental time ETL Batch information and

A few days ago, users asked MongoDB database permissions issues. At that time, a general understanding of this week, a closer look. For a database that cannot be accessed arbitrarily, there must be write access restrictions.Before you know this,

"The development process of the essay summary, you are welcome to review, you can do more rigorous "Introduction:MongoDB NoSQL Database Document type databaseA few days ago, to do a log collation of the project when the persistent storage with

MongoDB is a database based on distributed file storage. Written by the C + + language. Designed to provide scalable, high-performance data storage solutions for WEB applications. MongoDB is a product between a relational database and a

Importjava.util.ArrayList;Importjava.util.List;ImportJava.util.regex.Pattern;Importorg.bson.Document;Importcom.mongodb.MongoClient;Importcom.mongodb.MongoCredential;Importcom.mongodb.ServerAddress;Importcom.mongodb.client.FindIterable;Importcom.mongo

This article mainly introduces the implementation method and example of the group grouping in MongoDB, it is very simple and practical, the need of small partners can be consulted.Group aggregation is somewhat complex. The key that the group is

1, modify the start MongoDB requires user authenticationAdd parameter--auth.Now we remove the MongoDB service and add the service againMongod--dbpath "D:\work\MongoDB\data"--logpath "D:\work\MongoDB\log\mongodb.log"--install--servicename "MongoDB"- -

Delete the student first, then reinsert the data>Db.student.drop ()true> Db.student.insert ([{"_id": 1, "name": "Zhangsan", "age": +, "Sex": 1}, {"_id": 2, "name": "Lisi", "Age": 27} {"_id": 3, "name": "Wangwu", "Age": $}, {"_id": 4, "name":

MongodbPHP ExtensionsThis tutorial will show you how to install MongoDB extensions on Linux, Windows, MAC platforms. Installing MongoDB PHP extensions on Linux on the terminalYou can install MongoDB's PHP extension driver by executing the