Related Topics Node JS Question 69 How to handle database relationships and associations in an ORM like Sequelize or Mongoose? Answer In an ORM like Sequelize or Mongoose, you can handle database relationships and associations in a straightforward manner. Both Sequelize and Mongoose support defining and managing one-to-one, one-to-many, and many-to-many relationships. Here’s an example […]
Related Topics Node JS Question 64 What is the role of databases and ORMs in Node.js and why are they important for web applications? Answer Databases and Object-Relational Mapping (ORMs) are essential components of modern web applications built with Node.js. A database is a software system that allows users to store, manage, and retrieve data,
Related Topics Node JS Question 57 How to implement authentication and authorization in an Express.js application? Answer Authentication and authorization are essential parts of many web applications, and Express.js provides several tools and libraries to handle these tasks. There are many ways to implement authentication and authorization in an Express.js application, but one common approach
Related Topics Node JS Question 51 What is Express.js and how does it relate to Node.js? Answer Express.js is a popular open-source web framework for Node.js. It provides a set of features and tools for building web applications and APIs with Node.js, making it easier to handle common tasks such as routing, handling HTTP requests
Related Topics AJAX Question 11 What is XMLHttpRequest Object and how is it used in AJAX? Answer The XMLHttpRequest (XHR) object is a built-in JavaScript object that is used to make AJAX requests to a server from a web page without requiring a full page refresh. The XHR object provides a way for JavaScript code
Related Topics Node JS Question 46 Explain the difference between middleware and routing in Node.js and when each should be used? Answer Middleware and routing are both commonly used in Node.js applications, but they serve different purposes. Middleware functions are functions that have access to the request and response objects, and the next middleware function
Related Topics Node JS Question 41 What is the role of the HTTP module in Node.js and how is it used to create a web server? Answer The HTTP module in Node.js is a built-in module that provides functionality for creating HTTP servers and clients. It is a core module in Node.js and is used
Related Topics Node JS Question 36 Explain how Node.js handles large files and memory efficient data processing? Answer When processing large files, it’s important to take into account the available memory and optimize the code to avoid excessive memory usage. In Node.js, the file system module provides different methods for reading and writing files that
Related Topics Node JS Question 31 Explain what the Node.js file system module does and how it works? Answer The Node.js File System (fs) module is a built-in module that provides a way to interact with the file system in a Node.js application. It allows reading, writing, updating, and deleting files and directories. To use
Related Topics AJAX Question 1 What is AJAX and how does it work? Answer AJAX stands for Asynchronous JavaScript and XML. It is a set of web development techniques used to create fast and dynamic web pages without reloading the entire page. Instead, AJAX allows for the exchange of data between a web server and
