In this post, I’m going to do a quick comparison between multidimensional and tabular data models, and hopefully give you some intuition about why they have the features that they do. Continue reading “BI Theory #7: Multidimensional vs Tabular”
Previously I wrote about the basics of transactional databases. In this post, I’ll outline why you don’t necessarily want to build your analysis on top of a transactional database, and instead why you’d be better off using (or building!) an analytical database.
Just a quick disclaimer – I don’t intend on getting too technical with databases. The target audience for this article is still your everyday office worker rather than a database administrator or IT professional.
What is a database?
A database stores and organizes digital information. The way data is organized within the database allows it to be specialized for different scenarios. This results in different types of databases. Continue reading “BI Theory #5: What are databases?”
Now that you know the basic idea behind Power Query and Power Pivot it’s time to start downloading them! (if you have no idea what I’m talking about you may want to read my earlier posts here , , )
The thing to remember is that Power Query and Power Pivot aren’t just Excel features – they pop up in a few places and if you know how to use them in one application you can easily use them in another.
See below for some housekeeping on where to get access to Power Query and Power Pivot. Continue reading “BI Theory #4: Where to get Power Query and Power Pivot”
In this post I hope to give a brief comparison of M (formerly “PQFL”) and DAX. Continue reading “BI Theory #3: PQFL (“M”) vs DAX”