Presenting data in the format to ease visualization is required for any BI product. Power BI provides much of this with Data Analysis Expressions, (DAX). As a DBA, I admit to cringing every time a reference was made how similar it is to functions in Excel or other non-database platforms. I’m a DBA and I naturally am going to see data at a much larger, more complex level. I love the simplicity of DAX, which granted me the ability to acquire basic skills using it in just a day, but considering Power BI’s ability to pull from multiple data sources, including SQL Server, Oracle, PostgreSQL and even JSON files, the comparison to Excel left me feeling, well, ‘meh.’
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