May 2001
Intermediate to advanced
1088 pages
30h 13m
English
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Case Study
A company was implementing an online-ordering system using EJB 1.1. The database architecture was inherited from a previous version of the application and used automatically generated keys. The implementation of CMP wasn't very efficient and didn't deal with many of the complex relationships in the database.
The company opted for using BMP with views for many of the database tables. The entity beans had methods to return views of its data and to change its data from the contents of a view. Because some of the relationships were too complex to represent with single entity beans, the company also decided to use session beans to do some of the database work. For example, some views contained data spread across different database tables. ...
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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.