Preview Questions Data Modeling Concepts | Role Specific Skill

Question 1: What is your approach to designing a database for a distributed system?

Which action should you take?

Choose only one option

Use distributed databases

Implement data replication

Use data sharding

Regularly monitor data distribution

Question 2: How do you show the change of states in an object over time in UML?

Which action should you take?

Choose only one option

Use a state diagram

Use a class diagram

Use a sequence diagram

Use an activity diagram

Question 3: How do you ensure efficient data retrieval in your database design?

Which action should you take?

Choose only one option

Use indexing

Optimize query performance

Use caching

Regularly monitor query performance

Question 4: Your data warehouse needs to support real-time data updates. What do you implement?

Which action should you take?

Choose only one option

Use real-time ETL processes

Create a separate real-time data store

Implement change data capture (CDC)

Use a data streaming platform

Question 5: You find that some tables in your database are denormalized for performance. What do you do?

Which action should you take?

Choose only one option

Evaluate and balance performance vs. normalization

Normalize to Third Normal Form (3NF)

Normalize to Second Normal Form (2NF)

Normalize to Fourth Normal Form (4NF)

Question 6: What is your strategy for ensuring database reliability?

Which action should you take?

Choose only one option

Implement fault-tolerant design

Use data replication

Regularly test reliability measures

Provide training on reliability best practices