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on September 13, 2021

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MongoDB

Mongodb is a document based NOSQL database. Comparison with RDBMS Here , Collection is Table Database is Database Document(JSON) is Record/Row stored as binary which is BSON BSON Wired Tiger Engine is the storage engine in mongodb Stores document in the form of BSON which stands for Binary JSON Mongodb uses B-Tree algorithm internally Indexing required for better query performance Documents are schema less i.e. we can add info to any objects in single collection unlike RDBMS in which adds column by altering schema structure. Mongodb Architecture In the context of MongoDB, “cluster” is the word usually used for either a replica set or a sharded cluster Mongos : The instances provide the interface between the client applications and the sharded cluster Config servers : S tores the meta data for a sharded cluster Client : Connects mongo server through the drivers Replication sets: 8 Replica type : Master-...

MongoDB Tools

MongoDB tools MongoShell: Mongo shell is a REPL( Read Eval Print Loop) for interacting with MongoDB deployments i.e we can connect and manipulate the MongoDB in remote server. Documentaion here Steps to Install in Windows: Download MongoShell here (Platform :windows, Package : zip) Extract and go to bin folder Launch mongosh.exe , this will bring the shell for connecting remote mongo server like below Now type the below command and press enter to connect mongodb://hostname:port example: mongodb://localhost:27017 After connecting successfully , we can see output like the below. Robo3t(RoboMongo) : Robo3t is a graphical user interface (GUI) for your MongoDB hosting deployments Download here Run the executable file robo3t.exe and connect the mongo server by File > Connect > Create > Enter the host and port details and...

MongoDB Setup

Install MongoDB -> Community Server Prerequisites : Knowledge about mongodb Navigate to bin folder after installation mongodb/bin Single Node setup (Windows) Open cmd and navigate mongodb bin folder mkdir data/db -> any pathname, either we can create or use the existing empty folder mongod --dbpath data/db --port 27017 Command explanation mongod : It the primary daemon process for the MongoDB system. It handles data requests, manages data access, and performs background management operations. In simple words we can say, using mongd we can configure, initiate ,start and manage monogdb servers in the form of Single node server or Replica sets of Config servers/Shard servers --dbpath data/db : The path for dbserver must be mentioned so that it will put all the related files for the server like server configs, engine configs, database details, collection details, logs... Note: mongod will not create...

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