CRUD stands for Create Read Update and Delete. These are the four basic operations you can perform on data in a database. Think of it like managing your collection of books or maybe even your favorite toys. Each of these actions helps you control your data in a simple way
Create this is when you add new data to your database. For example if you want to add a new book to your collection you would use the create operation. In a database you would write an SQL command like INSERT to tell it hey I want to add this new book and here’s the title the author and maybe the year it was published. It’s super easy just like writing down a new toy you got for your birthday
INSERT INTO user ('first_name', 'last_name', 'email') VALUES ('Muhmmad', 'Ali', 'alimuhmmad@gmail.com')
Read this is all about retrieving data. Imagine you want to check what books you already have or maybe find a specific one. You would use the read operation. In SQL you use the SELECT command to ask the database to show you the information. So you might say show me all the books by a certain author or just give me the titles. It helps you see what you have in your collection
SELECT * FROM user
Update this is when you want to change something that’s already in the database. Maybe you found out that one of your books has a new edition or you want to change the author’s name. You use the UPDATE command in SQL for this. It’s like saying hey I need to fix the information about this book so let’s change the title or the author. You tell the database exactly what to change and where to find it.
UPDATE user SET first_name=Awais, last_name=Juno WHERE user_id=1
Delete this operation lets you remove data from the database. If you have a book that you no longer want or maybe it got damaged you can delete it from your collection. In SQL you use the DELETE command to say hey I want to remove this book from the database. It’s like cleaning up your shelf and getting rid of things you don’t need anymore
DELETE FROM user WHERE user_id=1
So these four operations create read update and delete are super important when working with databases. They let you manage your data in a clear and simple way. If you want to build an app or a website that involves storing data knowing how to perform CRUD operations is key. It’s like having the control to organize your collection exactly how you want it and make changes whenever you need to.
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