April 2011
Beginner to intermediate
443 pages
11h
English
book
Foundations of SQL Server 2008 R2 Business Intelligence, Second Edition
by Lynn Langit, Guy Fouché
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Understanding Unified Dimensional Modeling
The Unified Dimensional Model (UDM) is one of the key features of Analysis Services. In addition to removing the requirement that each dimension's hierarchies (or rollups) must be defined only at time of creation, Microsoft has simplified dimensional modeling by basing all dimensions on attributes. Simply put, each column from the source dimension table is (by default) an attribute for that dimensional item.
A hierarchy in SSAS is a grouping mechanism, and serves two purposes. The first is largely a convenience for end users. This type of hierarchy is called a browse (or navigational) hierarchy. The second type is called a natural hierarchy and will be discussed in greater detail in Chapter 3, “Introducing ...
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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.