May 2002
Intermediate to advanced
416 pages
8h 37m
English
Content preview from Executable UML: A Foundation for Model-Driven Architecture
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8.1. Unique Instance Constraints
Objects may have sets of attributes that are required to be unique.
a customer's login ID
a publisher's ISBN code
an order's order number
|
These attributes constitute ways to identify an individual instance. We call each required-to-be-unique set of attributes an identifier.
Definition: An identifier is a set of one or more attributes that uniquely ...
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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.