March 2018
Beginner to intermediate
638 pages
16h 29m
English
Content preview from Mastering Microsoft Power BI
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DirectQuery mode
A DirectQuery dataset is limited to a single data source and serves as merely a thin semantic layer or interface to simplify the report development and data exploration experience. DirectQuery datasets translate report queries into compatible queries for the data source and leverage the data source for query processing, thus eliminating the need to store and refresh an additional copy of the source data.
A common use case of Power BI and SSAS Tabular DirectQuery datasets is to provide reporting on top of relatively small databases associated with OLTP applications. For example, if SQL Server 2016 or later is used as the relational database for an OLTP application, nonclustered columnstore indexes can be applied to several ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.