November 2014
Beginner to intermediate
550 pages
17h 52m
English
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Chapter 8
Foundational Data Modeling
Abstract
A well-designed data model is the cornerstone to building business intelligence (BI) and data warehousing (DW) applications that provide significant business value. Effective data modeling results in transforming data into an enterprise information asset that is consistent, comprehensive, and current. Data is transformed from operational or source systems into a data warehouse, data marts, or online analytical processing (OLAP) cubes for analysis. Entity-relationship (ER) modeling (also referred to in the industry as relational modeling) is one of two logical data modeling approaches. There are three levels of data models: conceptual, logical, and physical. The modeling workflow includes gathering business ...
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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.