Here you can learn a full NodeJS course with proper explanations of basic to advanced concepts. NodeJS is a powerful technology for developers.
In MongoDB, a collection is a group of documents, similar to a table in relational databases. Collections are schema-less, meaning each document in a collection can have a different structure. What Is a MongoDB Collection? A collection in MongoDB is: Key Features of MongoDB Collections Prerequisites Method 1: Create a Collection Using MongoDB Shell Step … Read more
MongoDB does not explicitly create a database until it contains some data. Unlike traditional relational databases where you must explicitly create a database, MongoDB creates a database dynamically when you insert the first document into a collection. Key Points About MongoDB Databases Prerequisites Method 1: Create Database Using MongoDB Shell Step 1: Open the MongoDB … Read more
MongoDB is a popular NoSQL database that stores data in a flexible, JSON-like format called BSON (Binary JSON). Unlike traditional relational databases, MongoDB allows developers to handle large datasets and rapidly changing requirements with ease. Why Choose MongoDB? Prerequisites Step 1: Install MongoDB On Windows: On macOS: Use Homebrew to install MongoDB: brew tap mongodb/brewbrew … Read more
The JOIN clause in MySQL is used to combine rows from two or more tables based on a related column. With Node.js, you can dynamically query data from multiple tables using various types of joins like INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN. Why Use JOIN in MySQL? Connecting to the MySQL … Read more
The LIMIT clause in MySQL is used to restrict the number of rows returned by a query. It’s particularly useful when working with large datasets, allowing you to fetch only the rows you need. By combining the LIMIT clause with Node.js, you can control the size of your query results dynamically, optimizing performance and user … Read more
The UPDATE statement in MySQL is used to modify existing records in a table. When combined with Node.js, it allows you to dynamically update data based on your application’s requirements. Why Use UPDATE in MySQL? Connecting to the MySQL Database Before updating data, you need to establish a connection to your database. Example: Connect to … Read more
The DROP TABLE statement in MySQL is used to permanently delete a table from the database. It removes the table structure and all its data. When integrated with Node.js, you can dynamically delete tables as part of your application logic. Why Use DROP TABLE in MySQL? Connecting to the MySQL Database Before dropping a table, … Read more
The DELETE statement in MySQL is used to remove one or more rows from a table. When integrated with Node.js, it enables dynamic and programmatic deletion of data in your applications. Why Use DELETE in MySQL? Prerequisites MySQL Installed: Ensure MySQL is installed and running. Node.js Installed: Install Node.js if you haven’t already. MySQL Package … Read more
The ORDER BY clause in MySQL is used to sort the result set of a query. By default, MySQL sorts data in ascending order, but you can also sort it in descending order based on one or more columns. Why Use ORDER BY in MySQL? Prerequisites MySQL Installed: Ensure MySQL is installed and running on … Read more
The WHERE clause in MySQL is used to filter records based on specific conditions. It allows you to fetch, update, or delete only the rows that meet the given criteria. Why Use the WHERE Clause in MySQL? The WHERE clause helps you: Prerequisites MySQL Installed: Ensure MySQL is installed and running. Node.js Installed: Install Node.js … Read more