mongo database commands

Mongo client Common commands 1. database related commands 1showdbs list all databases 2usememo Use Database memo. Even if the database does not exist, it can be executed, but the database will not be created immediately. The database will be created

[MongoDB] building a Mongo database replica set (similar to a cluster) on the windows platform (III), mongodbmongo I have written two blogs about how to build a Mongo database replica set on windows. Article 1: How to build a Mongo database replica

---------------------------------Mongo Single-----------------------------------------------------------Mongo Installation:1. cd/usr/local/webserver/&& tar zxpf mongodb-linux-x86_64-2.0.6.tgz && mv mongodb-linux-x86_64-2.0.6 Mongodb2. Write the

Mysql, sqlsever, oracle, redis, mongo, postgres and other database backup and recovery commands, sqlseverredis The following is a simple example of how to back up and restore each database. For more detailed parameters and configurations, refer to

Background: I saw a nodejs of the MONGO operation, so I wanted to learn a bit about it.1. So I'm going to install a mongodb on my VPS First: "https://docs.mongodb.org/manual/tutorial/install-mongodb-on-linux/"Curl-o

This series of articles index the "Response Spring's word Wizard"Previously summary Spring Webflux Quick Start | Spring Webflux Performance Test | Spring WebClient performance testThis article sourcePerformance comparison of 1.4.4 synchronous and

Installation steps under CentOS via Yum are as follows:statement: Compared to those with the source code installed, less configuration and new log and data directory, this simple and rude, 1 , create a warehouse file, vi /etc/yum.repos.d/

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Db.getcollection ('Product').Update({Status: "Offline"},{$Set: {status: "Online"}},false,true) update, change all status offline to online, note quotes db.collection.Update(criteria, objnew, Upsert, Multi) The description of the four parameters is

In the traditional database, we have to manipulate the database data to write a large number of SQL statements, and in the storage of irregular data, the traditional relational database table when the processing of different fields appears to be a