October 2005
Beginner to intermediate
576 pages
13h 35m
English
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Chapter 9. Migration to the Architected Environment
Any architecture that must be implemented all at once, in a big bang, is doomed to failure in today's world. There simply is too much risk and too long a period to wait until there is a payback. In addition, trying to freeze changes to consider any path that is revolutionary (rather than evolutionary) is unrealistic.
It is very good news indeed that migrating to the architected data warehouse environment is a step-by-step activity that is accomplished one finite deliverable at a time. The most successful implementations of the architected environment have been those in which the data warehouse has been built one iteration at a time. In doing so, the data warehouse can be built for a minimum of employee resources and with absolutely minimal disruption to the existing applications environment. Both the size and the speed of iterative development are important. Results must be delivered quickly.
In this chapter, a generic migration plan and a methodology for development are discussed. The migration plan has been successfully followed by a wide number of companies; it is anything but a fanciful flight. The approach has been gleaned from the experiences of a number of companies. Of course, each company will have its own diversions and permutations. But the migration plan and approach have met with enough success in enough diverse companies to merit the confidence of the general-purpose developer.
A Migration Plan
The beginning point for ...
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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.