db createcollection

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Create a collection command for MongoDB db. createCollection

Create a collection command for MongoDB db. createCollection Create a collection command for MongoDB db. createCollection The complete command is as follows:Db. createCollection (name, {capped: , AutoIndexId: , Size: , Max

Common mongodb shell

Common mongodb shell > Use cmd_test // create a database switched to db cmd_test> db. createCollection ("test") // create a table is the collection {"OK": 1}> db. db. addUser (db. group (db. adminCommand (db. groupcmd (db. auth (db. groupeval (db.

MongoDB database documentation

  MongoDB database OverviewMongoDB is a high-performance, open-source, and non-pattern document-type database. It can be used in many scenarios to replace the traditional relational database or key/value storage mode. MongoDB is developed in C ++

Common shell for mongodb and mongodbshell

Common shell for mongodb and mongodbshell > Use cmd_test // create a database Switched to db pai_test > Db. createCollection ("test") // create a table as a set. {"OK": 1} > Db. Db. addUser (db. group ( Db. adminCommand (db. groupcmd ( Db. auth (db.

MongoDB step by step (2) mongodb compared with T-SQL, mongodbt-SQL

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

Basic operation examples of common MongoDB data tables

View all data tables> Use ChatRoomSwitched to db ChatRoom> Show collectionsAccountChatSystem. indexesSystem. users Create a data table> Db. createCollection ("Account "){"OK": 1} > Db. createCollection ("Test", {capped: true, size: 10000}) {"OK": 1}{

MongoDB Development Learning

If you have never been familiar with MongoDB or have a little understanding of MongoDB, if you are a C # developer, take a few minutes to read this article. This article will take you step by step to get started easily. Read directory 1:

MongoDB Learning (2) Visual Interface and mongodb Visualization

MongoDB Learning (2) Visual Interface and mongodb Visualization1. Installation visual interface 1. mongobooster installation and configuration 1. Download and install : Https://nosqlbooster.com/downloads After the download is complete, click Install:

Basic use of MongoDB

After MongoDB is started successfully, open a command line window and enter mongo to perform database operations. Enter help to see the basic operation command: showdbs: display the Database List showcollections: display the set in the current

Comparison of MongoDB commands and SQL syntax

Comparison between MongoDB and MySQL commands Traditional relational databases are generally composed of three levels: database, table, and record. MongoDB is composedDatabase, collection, and document)Three layers. MongoDB has no concept of columns,

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