Preview Questions Data Modeling Concepts | Role Specific Skill

Question 1: You need to model concurrent processes in a system. Which UML diagram is suitable?

Which action should you take?

Choose only one option

Use an activity diagram

Use a sequence diagram

Use a state diagram

Use a class diagram

Question 2: You need to model a relationship where one entity can have multiple types of associations with another entity. How do you handle this?

Which action should you take?

Choose only one option

Use multiple foreign keys

Create associative entities for each relationship type

Use polymorphic relationships

Implement a generic relationship entity

Question 3: How do you represent the lifecycle of an object 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 4: What strategy would you use to handle a dimensional model that requires frequent updates?

Which action should you take?

Choose only one option

Implement incremental data loading techniques to keep the model up-to-date

Rebuild the entire model from scratch after each update

Exclude less frequently updated data from the model

Opt for manual data updates to ensure accuracy and reliability

Question 5: How do you handle optional relationships in an ER model?

Which action should you take?

Choose only one option

Use optional foreign keys

Create a separate entity for optional relationships

Define optional attributes in the entity

Implement a flexible schema design

Question 6: How do you represent a derived attribute in an ER model?

Which action should you take?

Choose only one option

Use a dashed oval and connect it to the entity.

Include it as a regular attribute.

Create a separate entity for the derived attribute.

Use a multivalued attribute.