Learn: Data and Testing

Welcome!Great to have you back! You've already learned about design tools and human computer interfaces. Today, we'll dive into data and testing, which helps ensure systems work effectively and reliably.

What is Data?Data refers to information stored or processed by a computer. It can be numbers, text, images, or even sound. Data is essential because it drives decisions and powers systems.

Types of DataData can be structured or unstructured. Structured data is organised in rows and columns (like a spreadsheet), while unstructured data includes things like videos or social media posts.

Testing ExplainedTesting ensures a system works as expected. It identifies errors, improves performance, and ensures data integrity. Testing is critical for preventing issues before a system goes live.

Types of TestingThere are two main types of testing: functional testing, which checks if features work correctly, and non-functional testing, which measures things like speed and reliability.

Why Testing MattersTesting prevents costly errors and ensures systems meet user expectations. For example, testing a shopping website ensures customers can check out without problems.

Real-World ExampleThink about using a bank app. Testing ensures you can view your balance, transfer money, and see accurate data without errors. If testing didn't happen, you might see incorrect amounts or failed transactions.

Review Time!Great work! You've learned about data, its types, and the importance of testing. Let's check your understanding with a few questions.

Well Done!You've completed the lesson on data and testing. Keep practising to strengthen your understanding. Excellent work today!