Preview Questions Data Modeling Concepts | Role Specific Skill

Question 1: Your dimensional model includes data from various sources. How do you ensure consistency?

Which action should you take?

Choose only one option

Implement data transformation processes

Use a common data format

Implement a data normalization strategy

Use data mapping techniques

Question 2: In your ER model, you have two entities: Author and Book. What type of relationship do you define between them?

Which action should you take?

Choose only one option

One-to-One

One-to-Many

Many-to-One

Many-to-Many

Question 3: You need to improve query performance in your data warehouse. What is your solution?

Which action should you take?

Choose only one option

Implement indexing

Use materialized views

Optimize ETL processes

Partition large tables

Question 4: Your dimensional model must comply with regulatory requirements. What is your approach?

Which action should you take?

Choose only one option

Implement data governance policies

Use compliance management tools

Regularly audit and review compliance

Implement data retention policies

Question 5: How do you ensure data quality in your data warehouse?

Which action should you take?

Choose only one option

Implement data validation rules

Use ETL processes to cleanse data

Regularly audit and reconcile data

Apply data profiling techniques

Question 6: How do you retrieve the names of customers who have placed orders in the last month but not in the previous month?

Which action should you take?

Choose only one option

Use a nested query with EXISTS

Use a JOIN with a date condition

Use a window function with a date range

Use a UNION with date conditions