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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are domain constraints?
💡 Hint: Think about what kind of values can be entered in a column.
Question 2
Easy
True or False: Entity integrity constraints allow NULL values in primary keys.
💡 Hint: Recall what primary keys must ensure for database integrity.
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 happens if a NULL value is entered in a primary key?
- The database accepts it as a valid entry.
- It causes an error preventing the entry.
- It is ignored.
- It is automatically converted to a default value.
💡 Hint: Recall the rules about primary key requirements.
Question 2
True or False: Domain constraints ensure data types and formats are respected in a table.
- True
- False
💡 Hint: Think about what happens when invalid data is attempted.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a simple database schema for a library system that utilizes integrity constraints. Identify at least one domain, entity, and referential integrity constraint.
💡 Hint: Think about the relationships between books borrowed by members and validity of their IDs.
Question 2
Discuss potential issues that could arise if referential integrity constraints are not enforced in a customer-order database.
💡 Hint: Consider how missing links can cause confusion in record-keeping.
Challenge and get performance evaluation