Learn: Data and Testing

Welcome!Welcome back! You've already explored design tools and human-computer interfaces. Today, we'll build on that knowledge as we dive into data and testing, an essential part of creating reliable IT systems.

What is Data and Testing?Data refers to information stored or processed by computers, like numbers, text, or images. Testing is the process of checking whether a system works as expected to ensure data is handled correctly. Both are crucial for creating systems that are accurate, efficient, and user-friendly.

Why is Testing Important?Testing ensures software performs correctly and accurately processes data. It helps identify errors (bugs) and ensures systems meet user needs. Imagine a banking app; testing ensures your account balance is calculated correctly after a transaction.

Types of DataData can be qualitative (descriptive, like 'blue', 'large') or quantitative (numerical, like '5', '10.2'). Systems must handle both types effectively. For example, an online shop stores qualitative data like product descriptions and quantitative data like prices.

Testing MethodsThere are different ways to test systems: functional testing checks specific features (e.g., does a search bar work?), while performance testing checks how the system handles heavy loads (e.g., many users at once). Both are key to ensuring reliability.

Testing ToolsTesting tools like debuggers and simulation software help identify and fix errors. Debuggers let developers step through code to find issues, while simulation software mimics real-world scenarios to test system behaviour.

Review Time!Great work! You've learned about data types, testing methods, and tools. Let's review what you've covered with a few questions.