What is MongoDB?
MongoDB is a cross-platform document-oriented database. It is a free and open-source software. If you download MongoDB, with the package or soft ware, there are tools that will be downloaded. Every tool has its own kind of usage. These tools have been divided into 6 uses for better understanding.
Core processor- mongod is involved in database activities, mongos is related with Query Router and mongo(mongo shell).
Window services- It is mongod.exe and mongos.exe
Binary import and export tools- mongodump, mongostore, bsondump, mongooplog
Data import and export tools- mongoimport and mongoexport
Diagnostics tool- mongostat, mongotop, mongosniff, mongoperf
GridFS- mongofiles (for large files)
mongod is the primary daemon process for the MongoDB system. Database is a physical container for collections. Each database gets its own set of files on the file system. A single MongoDB server has multiple databases and handles data requests, manages data format, performs background management operations.
MongoDB has a collection of MongoDB documents in it. It exists within a single database. Also, documents within a collection can have different fields and each are of similar purpose. This document follows a JSon format.
What is JSON and BSON?
There are two things that have to be kept in mind while dealing with JSON– Object and Array. Object is a collection of name/value pairs. An Array is an ordered list of values. 100 JSON documents can be embedded while working with MongoDB.
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