MEAN stands for MongoDB, ExpressJS, AngularJS, Node.js.
MongoDB is based on NoSQL database, the data representation is handled by using JSON-style documents. In other words, this is the database used to store the apps. MongoDB through its flexible document model measure the productivity.
This framework is an HTTP Server based framework offers useful components and modules for the website app. Simple UI in the ExpressJS framework helps the professional to make endpoints and cookie handling. It also provides strong features of the app.
MEAN Stack development has a notable role in each of the above-mentioned technology.
For example, if a customer wants a user data from its app, the customer will add the username and password in the user interface and a request is sent to the server using AngularJS. The Nodejs framework will examine the request and evaluate the login credentials and send it to ExpressJS. The ExpressJS will search for the corresponding data in the MongoDB database.
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All the data of the app stored in the MongoDB, it is a cloud database. MongoDB is responsible to check and validate the login credentials and send it to the ExpressJS. ExpressJs will send back the data from DB into the NodeJS server and this server will manipulate the request into Angular JS. Eventually, AngularJS is responsible to display the result to the customer.
The JSON used by all the components of MEAN stack, because of this the data flow smoothly among all the layers. The data on the customer side and back-end side use the JSON format for making the smooth.
The cloud functionality of the application is implemented by using MongoDB. MongoDB provides auto replication and failure support by stretch across the cluster of client-server. It also helps to develop, test and host applications on the cloud.
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