August 2000
Intermediate to advanced
816 pages
18h 34m
English
Content preview from COM+ Unleashed
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Three-Tiered Design
One of the most successful models to emerge from the client/server world has been the three-tiered model. A tier, or layer, is a collection or set of independent homogenous objects (each solving a small problem) that together solve a larger but common problem.
Consider a typical PC application today. It most likely interacts with a user, processes some data, and perhaps persists its state somewhere—hence three tiers.
The three tiers are generally known as presentation, business logic, and data services. Figure 2.1 illustrates this idea and compares it to the monolithic approach, in which abstractions such as business logic and user interfaces are all bundled into one.
Figure 2.1. Monolithic versus three-tiered design.
It ...
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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.