Some Backend Technology You Should Know

1. CRUD operation: CRUD stands for Create, read, update, delete. Crud operation is an important thing in web development. It is used all the time in every website or web application. This crud operation mainly happens with the client-side and the server to exchange data. Between client and server API works to do this perfectly. When we are building APIs for our website backend connectivity the CRUD operation is held at that time. API integration is dependent on the crud operation.

• When we want to add new data to our database at that time the create operation works. That means we are posting data to the server. Here in create operation, the post method works to complete the create operation to store data into the database. In this create operation we are requesting the server to store the requested data in the database.
• When we want to get the data from our database the read operation works at that time. Read means we want to get the specific data from the database. Here the get method works to get the data from the database with the help of API. in this read operation we request the server to send or give the requested data from the server.
• If we want to update our existing data from the database this time the update operation is held. This means we are updating our existing data. To complete the operation the put method is needed to do.
• Delete operation means we want to delete the existing data or request data from the database.

CRUD operation is happen on every website that has the server-side technology used on their website.

2) JWT token: JWT stands for JSON Web Token. The JWT token is used for the authentication of our data. We usually use JWT token to keep our data safe and secure from malware. This Jwt token service is very popular for their service to secure our private data. It encrypt our data from public to private. We may use the web token instead of our real data or key. The file is encoded in JSON format.

We will use JWT token for two things one is for Authorization and another is to exchange information.

• Authorization: Authorization is mostly used JWT token services to check is the user logged in, allowing the user to access routes, services and resources that are permitted to that token.
• Information Exchange: JSON web token is highly used to exchange the information between parties.

JWT token consist of three parts separated dots and they are header, payload and signature.

3) Mongoose: Mongoose is a node.js based object data modeling library for MongoDB. By using mongoose we will connect the database with MongoDB. We will get a Uri to connect the MongoDB database through Mongoose. Mongoose used its schema to its application layer. It also gives us some features to work with mongoDB with best services. It is basically a library to do the backend work with MongoDB database.

4) Mysql: MySQL is the relational database management system that is based on Structured Query Language(SQL). Maintaining a database in a structured way is very important. To maintain the structure and get the data perfectly now every agency is using relational database like mysql. MySQL is a relational database and it is easy to use and also it is an open-source to use. When a website needs to use critical or many data to store with better management so that if needed we may get the data immediately with the best results in this case we will use Mysql database. Mysql database is extremely powerful. Sql databases are table-based database.

5) Express Js: Express js is a web application framework for node js. It is mainly used for designing and building web applications. It is used to build web applications and API. express js enhance the functionality for node js. We can now easily build web applications and API with the help of using express js. There are some features of express js like

• With the help of express js, we can now develop our server-side very fast. Because there is some build in functionality in express js. That’s why we can build the server-side very fast.
• It is also used for the middlewares. Middleware is also a part of the program that has also the access to database.
• Express js is also used to routing, templating and debugging.

Express js makes the front-end developer’s life easier to work with the backend technology.