codewithhemu

What is a Primary key vs Foreign key

August 16, 2025

Let’s break it down clearly: Primary Key (PK): student_id name age 1 Alice 20 2 Bob 21 Here, student_id is...

What is the difference between MyISAM and InnoDB?

August 16, 2025

Here’s a detailed comparison between MyISAM and InnoDB, the two main MySQL storage engines: Feature MyISAM InnoDB Transaction Support ❌...

Explain MySQL storage engines.

August 16, 2025

MySQL storage engines are the components that handle how data is stored, retrieved, and managed in a database. Each storage...

What are the different data types in MySQL?

August 16, 2025

In MySQL, data types define the kind of values that can be stored in a column. They are broadly categorized...

What are the differences between SQL and MySQL?

August 16, 2025

Here’s a clear breakdown of the differences between SQL and MySQL: Feature SQL MySQL Definition SQL (Structured Query Language) is...

What is a generator function?

August 16, 2025

A generator function in JavaScript (or Python, since both use similar concepts) is a special type of function that can...

Explain Symbol in JavaScript.

August 16, 2025

1. What is a Symbol? A Symbol is a unique and immutable primitive value introduced in ES6. Unlike strings or...

What is Proxy and Reflect in JavaScript?

August 16, 2025

Sure! Let’s break down Proxy and Reflect in JavaScript clearly. They are closely related and introduced in ES6 to provide...

Difference between shallow copy and deep copy.

August 16, 2025

The difference between shallow copy and deep copy mainly revolves around how nested objects (or references) are copied. Let’s break...

Explain debounce and throttle.

August 16, 2025

Sure! Debounce and Throttle are two techniques used in JavaScript to control how often a function is executed, especially when...