3. give one difference between unit testing and system testing.\n4. what is the role of a data…
3. give one difference between unit testing and system testing.\n4. what is the role of a data dictionary?\n5. write one reason why we use passwords in computers.
Answer
Brief Explanations:
- For question 3: Unit testing focuses on individual components, while system testing examines the entire system as a whole.
- For question 4: A data dictionary defines and documents data elements, their relationships, and usage in a system, aiding in data - management and understanding.
- For question 5: Passwords are used in computers to provide security by authenticating users and restricting access to authorized individuals only.
Answer:
- Unit testing tests individual components; system testing tests the whole system.
- It defines and documents data elements and their usage.
- To provide security and authenticate users.