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********************************** Connect to the MongoDB database * * ************************* format ("mongodb: username: password @ address: Specifies the database by default on the port ", parameter) $ connnewMongo (); can be abbreviated as $

Copy Code code as follows: /** * PHP Operation MongoDB Learning Notes */ //************************* * * Connect MongoDB database **// //************************* Format => ("mongodb://Username: password @ address: Port/default

A.MongoDB features, features, usage scenariosMongoDB Installation and ConfigurationMongoDB ArchitectureDatabase start, stop, connectJson/bson data formatMongodb1. FeaturesData is in memory, written to disk through a background threadNon-modal

Introduction to MongoDB and addition, deletion, modification, and query I. Introduction MongoDB is written in C ++ and is an open source database system based on distributed file storage. MongoDB is designed to provide scalable, high-performance

First, the index introductionIn MongoDB, indexes are used to support efficient queries. If there is no index, MONGODB must scan each document in the entire collection to find a matching document. However, if an appropriate index is established,

/*** MongoDB $type operator*/ /*** The $type operator is based on the Bson type to retrieve the matching data type in the collection and returns the result.* The types of MongoDB that can be used are shown in the following table:* Type Number Notes*

MongoDB is a high performance NoSQL database based on document type, which has excellent performance under high concurrency, therefore, the use of MongoDB in the Internet industry will be very extensive. Of course, MongoDB is mainly concerned about

I. Initial knowledge of MONGODBMongoDB 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

Brief introduction 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

To use MongoDB, You need to import the following classes, not all of which are required.Import com. MongoDB. Mongo;Import com. MongoDB. dB;Import com. MongoDB. dbcollection;Import com. MongoDB. basicdbobject;Import com. MongoDB. dbobject;Import com.