Q351. DML includes?
**DML** stands for **Data Manipulation Language**. DML commands manage, insert, retrieve, and modify actual data rows stored inside database tables: ### Core DML Statemen...
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Q352. What is callback in callback?
You can nest one callback inside in another callback to execute the actions sequentially one by one. This is known as callbacks in callbacks. Beware, too many levels of n...
Q353. How to re-render the view when the browser is resized?
You can use the `useState` hook to manage the width and height state variables, and the `useEffect` hook to add and remove the `resize` event listener. The `[]` dependenc...
Q354. GRANT and REVOKE are under?
`GRANT` and `REVOKE` belong to **DCL (Data Control Language)**. ### Purpose of DCL: DCL commands manage user security privileges, access rights, and permissions across da...
Q355. What is the difference between margin and padding in CSS?
Margin is the space between the border of an element and the surrounding elements, while padding is the space between the content of an element and its border.
Q356. How to pretty print JSON with React?
We can use `` tag so that the formatting of the `JSON.stringify()` is retained: ```jsx harmony const data = { name: "John", age: 42 }; function User { return {JSON.string...
Q357. Why can't you update props in React?
The React philosophy is that props should be _immutable_(read only) and _top-down_. This means that a parent can send any prop values to a child, but the child can't modi...
Q358. Which statement inserts new data?
The **`INSERT INTO`** statement is used to add new rows of data into a database table: ```sql INSERT INTO Customers (first_name, last_name, email) VALUES ('John', 'Doe', ...
Q359. What is the CSS position property and its values?
The CSS position property controls how an element is positioned on a page. The possible values are static, relative, absolute, fixed, and sticky
Q360. How to focus an input element on page load?
You need to use `useEffect` hook to set focus on input field during page load time for functional component. ```jsx harmony import React, { useEffect, useRef } from "reac...