show dbs

I. Use of the databaseShow all database commands$ . / 3.0. 6 to : Test> show dbslocal 0. 078GBtest 0. 078GB>Displays the current database object$ . / 3.0. 6 to: Test> dbtest>Switch database> Use to db local> dblocal>Connecting to a

I. MONGODB Replication INTRODUCTIONThe first sentence on the official website is replication is the process of synchronizing data across multiple Servers. Translation is replication (replication) is the process of synchronizing across multiple

MongoDB 3.0 Security access control, in the addition of users above the 3.0 version and the previous version there is a big difference, here is the next 3.0 of the method of adding users.Create the first user (the user needs to have grant permission,

MongoDB CREATE DATABASE syntaxThe syntax format for MongoDB database creation is as follows:Use database_nameIf the database does not exist, create the database, or switch to the specified database.InstanceThe following example we created the

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

Summary:MongoDB 3.0 Security access control, in the addition of users above the 3.0 version and the previous version there is a big difference, here is the next 3.0 of the method of adding users.Environment, testing:After installing MongoDB, first

Database operations Command Operation db View Current Database show dbs See how many databases are on the current port use db_name Switch database,

This article describes the basic configuration and management of a MongoDB replica set, including configuration from which nodes can read data, view replica set status, change Oplog size, configure a replicated set with authentication The

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

/** * Installed in version centos-6.4-minimal mongodb-x86_64-3.0.2 * @see----------------------------------------------------------- ---------------------------------------------* @see Install MongoDB * @see [[email protected] ~]$ cd/app/software/* @

MongoDB installation and master-slave replicationOne, MongoDB installation1. Download the Mongodblinux version (note the difference between 32-bit and 64-bit)wget http://downloads.mongodb.org/linux/mongodb-linux-x86_64-2.0.7.tgz2. UnzipTar xvf

MongoDB journey (iii) basic management (MongoDBJavascriptShell): showdbs; showcollections; db. stats (); db. members. stats (); db. runCommand ({dbstats: 1}); db. runCommand ({collstats: 1}); db. runCommanddb. $ cmd. findOnedb. el MongoDB journey

V. MongoDB import, export, backup, recovery, user authorization 1: Data export, data import as a DBA (Administrator), often encountering the need to import and export data, the following describes the utility (included): 1. import data to export csv

I. Create a new database usetoto; switchedtodbtotoshowdbs; admin (empty) local0.078GBusetoto; alias creates 1 million pieces of data for (vari1; i000000; I ++ ){... db. c3.insert ({name: zhangsan, age: I });...} db. I. Create a new database use toto;

Query all database showdbs; Switch to create database usemydb; display all database collections showcollections query the list of database names contained in the specified database db. getCollectionNames () deletes the database currently in use.

Backup: mongodump has the best speed and compression ratio, with 28% MB of data per second and a compression ratio of up to. Restore: mongoimport is faster, but it does not guarantee complete data import to m. Backup: mongodump has the best speed

Http://www.cnblogs.com/yoolonet/archive/2011/08/27/2155701.html A series of articles about MongoDB recently used MongoDB as a data storage system to record their own applications and problems in actual development. I hope this will be helpful to my

The deployment of the MongoDB environment is simple. People who have already used it will certainly share the same idea with me. First download the corresponding version (http://www.mongodb.org/downloads) on the official website, to distinguish

MongoDBDataLibrary IntroductionMongoDB is a highPerformance,Open Source, NoneModeDocumentationDatabaseIt can be used in many scenarios to replace the traditional relational database or key/value storage mode. MongoDB uses C ++Development, Provides

MongoDB step by step (2) mongodb compared with T-SQL, mongodbt-SQL SQL Terms/Concepts MongoDB Terms/Concepts Database Database Table Collection) Row Document) Column Key) Value