How does a Power BI consultant ensure accurate data modeling?

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Power BI consultants use methods like normalization to organize data into logical structures and eliminate redundancy. They design star schemas for efficient querying and ensure relationships between tables are well-defined. Using Power Query, they clean, transform, and prepare data before modeling. Power BI consultant employ DAX functions for calculated columns and measures while adhering to naming conventions for clarity. They also validate the model by testing against sample datasets and comparing outputs with existing reports. These methods ensure the data model is both accurate and optimized for performance, enhancing the overall user experience.