snowflake schema use cases

[powerbiexpert22]

what are those use cases in power bi where we must go with snowflake schema?

[Ritaf1983 · Accepted solution]

Hi @powerbiexpert22 

In Power BI, the best practice for data modeling is to use a star schema whenever possible. Star schemas are simpler and often perform better, making them the preferred choice for most scenarios. However, there are specific cases where using a snowflake schema is appropriate and beneficial.

When to Use a Snowflake Schema in Power BI

1. Normalized Data Structure

• Scenario: When your source data is highly normalized.
• Reason: A snowflake schema mirrors the normalized structure, making it easier to map and integrate with your data sources without extensive denormalization.

2. Complex Data Relationships

• Scenario: When your data model requires complex relationships among dimensions.
• Reason: Snowflake schemas allow you to handle intricate hierarchies and many-to-many relationships more effectively by breaking down dimensions into multiple related tables.

3. Efficient Storage and Data Integrity

• Scenario: When storage efficiency and data integrity are critical.
• Reason: Snowflake schemas reduce data redundancy by normalizing dimension tables, which helps maintain data integrity and reduces storage requirements.

4. Data Consistency and Maintenance

• Scenario: When maintaining data consistency across reports is crucial.
• Reason: Normalized tables in a snowflake schema make it easier to update and manage data, ensuring consistent information across various reports and dashboards.

5. Large and Complex Data Models

• Scenario: When dealing with large and complex data models that need to scale.
• Reason: Snowflake schemas can handle large datasets and complex relationships more efficiently, making them suitable for enterprise-scale data models.

6. Reducing Data Duplication

• Scenario: When you need to minimize data duplication.
• Reason: By normalizing dimension tables, snowflake schemas reduce redundant data storage, which can improve query performance and manageability.

7. Detailed Hierarchical Reporting

• Scenario: When your reporting requires detailed hierarchical structures.
• Reason: Snowflake schemas are well-suited for representing detailed hierarchical relationships, allowing for more granular and flexible reporting
  For more information please refer :
  My favorite video :
  https://www.youtube.com/watch?v=-vTakVyIDUU
  And another good explanation:
  https://www.youtube.com/watch?v=vZndrBBPiQc
  

  If this post helps, then please consider Accepting it as the solution to help the other members find it more quickly.