June 2014
Beginner to intermediate
304 pages
7h 25m
English
Content preview from Spring MVC Beginner's Guide
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The domain layer
Let's start with the domain layer. A domain layer typically consists of a domain model. So, what is a domain model? A domain model is a representation of the data storage types required by the business logic. It describes the various domain objects (entities); their attributes, roles, and relationships; plus the constraints that govern the problem domain. Take a look at the following domain model diagram for order processing to get a quick idea about the domain model:
Sample domain model
Each block in the preceding diagram represents a business entity, and the lines represent the associations between the entities. Based on the preceding ...
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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.