Skip to main content
Practice

Data Types

Every column in a SQL table has a data type, which is a rule that tells the database what kind of values it can store.


Understanding data types helps you design tables that store information efficiently, minimize errors, and improve performance.


You can find the following information in the slides:

  • Why data types matter in schema design
  • How different types (e.g., TEXT, INT, REAL) behave
  • Where you'll typically use each type in real-world applications

Want to learn more?

Join CodeFriends Plus membership or enroll in a course to start your journey.