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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define a Super Key.
💡 Hint: Consider what attributes can point to a unique row.
Question 2
Easy
What is the difference between a Candidate Key and a Super Key?
💡 Hint: Think about the minimum requirement for uniqueness.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is a Super Key?
- A key that must be unique and minimal.
- Any attribute that can uniquely identify rows.
- A key that cannot contain NULL values.
💡 Hint: Think of all the possible attributes that can identify a row.
Question 2
True or False: A Foreign Key can contain duplicate values.
- True
- False
💡 Hint: Think about how many employees can belong to the same department.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a scenario where you have a single table for an online store, including products, and define which types of keys you would implement and why.
💡 Hint: Consider how each product needs to be uniquely identified while understanding relationships with categories.
Question 2
Explain how you would implement Referential Integrity in a relational database that includes orders linked to customers.
💡 Hint: Think about how to manage records so that any order must correspond to a valid customer.
Challenge and get performance evaluation