Question 1

What is the first step in creating a data model in Power BI, according to the video?

Accepted Answer

Importing all the data tables into Power BI.

Answer

Writing documentation about the data model.

Answer

Subscribing to the Data Tutorials channel.

Answer

Identifying the business requirements for the reports.

Question 2

How can Power BI automatically create relationships between tables during the import process, according to the video?

Accepted Answer

By matching columns with the same name and data type.

Answer

By analyzing the content of each table.

Answer

By using a machine learning algorithm.

Answer

By requiring user input for each relationship.

Question 3

What are the two main types of tables used in a data model, according to the video?

Accepted Answer

Fact tables and dimension tables.

Answer

Input tables and output tables.

Answer

Raw data tables and calculated data tables.

Answer

Large tables and small tables.

Question 4

Which type of cardinality is preferred in a data model, according to the video?

Accepted Answer

One-to-many.

Answer

All of the above.

Answer

Many-to-many.

Answer

None of the above.

Question 5

What are some of the negative consequences of using many-to-many relationships in a data model, according to the video?

Accepted Answer

Inflated aggregation values and increased processing load.

Answer

Incompatibility with row-level security.

Answer

Difficulty in creating hierarchies.

Answer

Increased subscription cost for Power BI.

Question 6

What are some best practices for keeping a data model simple, according to the video?

Accepted Answer

Use star schema if possible and avoid unnecessary tables.

Answer

Include as many tables as possible for better organization.

Answer

Design the model without considering future changes.

Answer

Use complex calculations within the data model.

Question 7

What is the purpose of documenting a data model, according to the video?

Accepted Answer

To help other users understand and maintain the model.

Answer

To impress interviewers during a job interview.

Answer

To track the number of times the model has been used.

Answer

To comply with data privacy regulations.

Question 8

What is the importance of version control for data models, according to the video?

Accepted Answer

To track changes made to the model over time.

Answer

To automatically update the model with new data.

Answer

To limit the number of users who can access the model.

Answer

To ensure all users are using the same version of the model.

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