Web Development with Node.JS and MongoDB (Video 26)

This video tutorial covers the implementation of CRUD operations using RESTful APIs in Express JS. It explains how to handle HTTP methods like GET, POST, PUT, and DELETE, and how to manage data aggregation using MongoDB. The tutorial emphasizes the importance of transforming data before returning it to ensure security and compatibility. It also discusses API design considerations and the use of cache control headers. The video concludes with a summary of REST API concepts and a preview of the next section on testing.

What is the primary purpose of the GET HTTP method in REST APIs?

• To retrieve data

• To update existing resources

• To delete resources

• To create new resources

Which MongoDB operator is used to deconstruct an array field into multiple documents?

• $unwind

• $match

• $project

• $group

What is the role of the $group operator in MongoDB aggregation?

• To project specific fields

• To group documents by a unique identifier

• To sort documents

• To filter documents

In Express JS, which method is used to handle the creation of resources?

• GET

• POST

• DELETE

• PUT

Why is it important to transform data before returning a response in Express JS?

• To increase response time

• To reduce server load

• To ensure data security and prevent exposing database structure

• To improve data accuracy

Which HTTP method is used in Express JS to update existing resources?

• DELETE

• PUT

• POST

• GET

What is a key consideration when designing an API for deleting resources?

• Ensuring the resource is always deleted

• Only allowing deletion if the user is an admin

• Returning a success response regardless of feedback presence

• Always returning an error if the resource is not found