← Databases Explained

Lesson 3 of 3 · 9 min

Create, read, update, delete

CRUD covers the four basic data operations every app needs.

INSERT adds rows, SELECT reads, UPDATE changes and DELETE removes — always with care.

Practice

Match each CRUD letter to its SQL keyword from memory.

Quiz

+50 pts
1. The U in CRUD is…
2. Reading rows uses…

Optional resources

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DB Fiddle

Try table designs and queries with fictional sample data.

Browser SQL playground; never paste private or personal data.

Explore tool