3. Databases

Data Modelling — Quiz

Test your understanding of data modelling with 5 practice questions.

Practice Questions

Question 1

In the context of data modeling, when transforming a conceptual data model into a logical data model, which of the following is the most critical step for accurately representing complex relationships, particularly those involving many-to-many associations?

Question 2

A data architect is tasked with optimizing a database for read-heavy analytical queries, where response time is critical, even at the cost of some data redundancy. Which technique would be most effectively applied during the transition from a logical data model to a physical data model?

Question 3

Consider an Entity-Relationship (ER) diagram where an 'Employee' entity has a composite attribute 'FullName' composed of 'FirstName' and 'LastName'. How would this typically be represented in a physical relational database schema?

Question 4

A database designer is creating a physical data model for a system that needs to store historical data for every change made to a customer's address. Which database feature or design pattern would be most suitable to track these changes efficiently without altering the primary customer record?

Question 5

Which of the following best describes the role of referential integrity in a physical data model?