April 2015
Beginner
340 pages
7h 26m
English
Content preview from Learning Tableau
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Working with extracts instead of live connections
Most data sources allow the option of either connecting live or extracting the data. However, some cloud-based data sources require an extract. Conversely, OLAP data sources cannot be extracted and require live connections.
When using a live connection, Tableau issues queries directly to the data source (or uses data in the cache if possible). When you extract the data, Tableau pulls some or all of the data from the original source and stores it in a TDE file. Extracts extend the way in which Tableau works with data. Consider the following diagram:
The fundamental paradigm of how Tableau works with ...
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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.