Practice - Keys: Super Key, Candidate Key, Primary Key, Foreign Key, Unique Key
Practice Questions
Test your understanding with targeted questions
Define a Super Key.
💡 Hint: Consider what attributes can point to a unique row.
What is the difference between a Candidate Key and a Super Key?
💡 Hint: Think about the minimum requirement for uniqueness.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is a Super Key?
💡 Hint: Think of all the possible attributes that can identify a row.
True or False: A Foreign Key can contain duplicate values.
💡 Hint: Think about how many employees can belong to the same department.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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Reference links
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