Preview Questions Data Modeling Concepts | Role Specific Skill

Question 1: How would you design a dimensional model to handle semi-structured data types?

Which action should you take?

Choose only one option

Use hybrid schema designs incorporating both structured and semi-structured data

Exclude semi-structured data types from the model

Opt for a flat file structure to ensure compatibility

Implement separate data warehouses for structured and semi-structured data types

Question 2: How do you manage changing business requirements in your dimensional model?

Which action should you take?

Choose only one option

Regularly update and review the model

Use flexible schema design

Implement versioning in the model

Apply incremental changes based on requirements

Question 3: How do you decide between using a star schema or snowflake schema for a new dimensional model?

Which action should you take?

Choose only one option

Analyze the complexity of data relationships and choose the schema that best fits the requirements

Always opt for a snowflake schema to maintain data integrity

Choose a star schema for flexibility in reporting

Design a schema based on personal preference rather than data requirements

Question 4: How do you ensure data consistency in your database design?

Which action should you take?

Choose only one option

Use ACID transactions

Implement validation rules

Regularly audit data

Use data synchronization processes

Question 5: How do you model the hierarchy and relationships of classes in a system?

Which action should you take?

Choose only one option

Use a class diagram

Use a sequence diagram

Use a state diagram

Use a component diagram

Question 6: You are modeling a hierarchical data structure. Which relationship type do you use?

Which action should you take?

Choose only one option

One-to-One

One-to-Many

Many-to-One

Many-to-Many