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Normally, I write about updates in the Power BI universe quite rarely, and when I do, it’s only when it’s a significant improvement from my perspective. So it is in this case.Last week, Microsoft introduced in Preview the ability to access Power BI datasets and Azure Analysis Services via DirectQuery. What doesn’t sound all that spectacular could actually be Power BI’s next big unique selling point!

Combination of multiple Power BI datasets and flat files

But what exactly are the new possibilities of the new composite model and what does that mean in real life? So far we have been able to connect “live” to multiplerelational databases. Once we connected to a Power BI dataset, there was only the option to connect to a single dataset.