Preview Questions Data Modeling Concepts | Role Specific Skill

Question 1: You need to design a data warehouse schema for reporting purposes. What do you use?

Which action should you take?

Choose only one option

Implement a star schema

Use a snowflake schema

Create a hybrid schema

Use a normalized schema

Question 2: How do you model a scenario where an entity can exist independently but can also have optional relationships with other entities?

Which action should you take?

Choose only one option

Use optional foreign keys

Create a separate join table

Define the optional relationships in a different entity

Use subtypes and supertypes to handle the relationships

Question 3: Your database includes multi-valued attributes. How do you handle this?

Which action should you take?

Choose only one option

Apply Fourth Normal Form (4NF)

Apply Third Normal Form (3NF)

Apply Second Normal Form (2NF)

Apply Boyce-Codd Normal Form (BCNF)

Question 4: How do you handle many-to-many relationships in your dimensional model?

Which action should you take?

Choose only one option

Use a bridge table

Use a snowflake schema

Implement a hybrid schema

Use multiple fact tables

Question 5: Your data warehouse needs to support complex analytical queries. What is your approach?

Which action should you take?

Choose only one option

Implement OLAP cubes

Use advanced indexing techniques

Optimize the schema design

Use in-memory processing

Question 6: You are reviewing a database design that includes non-key attributes. What is your approach to normalization?

Which action should you take?

Choose only one option

Apply normalization up to Third Normal Form (3NF)

Apply normalization up to Second Normal Form (2NF)

Apply normalization up to Fourth Normal Form (4NF)

Use Boyce-Codd Normal Form (BCNF)