Move Your Shared Tables to Dataflow; Build a Consistent Table in Power BI

I have written previously about the use cases of Dataflow in Power BI, and one of them was using one Power Query table in multiple Power BI reports. However, I that article just covered the surface, and I still see many solutions duplicating Power Query scripts in multiple files which brings a lot of inconsistency ...

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Basics of Modeling in Power BI: What is a Dimension Table and Why Say No to a Single Big Table

I have previously written about relationships and the cardinality of the relationship. Now is a good time to explain the two types of tables we deal with every day in a reporting data model; Fact and Dimension table. In this article, I will explain what a Dimension table is, and examples of it, and how ...

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Many-to-One or Many-to-Many? The Cardinality of Power BI Relationship Demystified

In the previous article, you learned the basics of relationships, you learned why we need a relationship, and what is the filtering impact of it across multiple tables. In this article, you will learn about one of the most important properties of a relationship called Cardinality. Understanding what the meaning is of 1-1, 1-Many, Many-1 ...

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Combining Dimension Tables in Power BI using Power Query: Basics and Foundations of Modeling

The article that I wrote earlier this week about the shared dimension had a lot of interest, and I’m glad it helped many of you. So I thought better to write about the basics of modeling even more. In this article, I will be focusing on a scenario that you have all faced, however, took ...

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Creating a Shared Dimension in Power BI Using Power Query: Basics and Foundations of Modeling

For a data warehouse professional, a shared dimension concept is always clear, and a star schema design always includes such type of entity. However, in the Power BI user’s world, there are many users who are not coming from a data warehousing background. It is necessary to understand some of the concepts in order to ...

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Multiple Layers of Aggregations in Power BI; Model Responds Even Faster

Aggregations are speeding up the model. However, the aggregated table is not just one table, It can be multiple layers of aggregations. Aggregation by Date, aggregation by Date and Product, aggregation by Date and Product and Customer. Having multiple layers ensures that you always have the best performance result possible, and you only query the ...

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