April 2003
Beginner to intermediate
380 pages
12h 25m
English
Content preview from Java Data ObjectsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Who Should Read This Book?
If you are a Java programmer who writes software that needs to store data beyond the duration of a single Java Virtual Machine (JVM) context, then you should read this book. We assume that you already know Java. But you don’t need to have a lot of knowledge of databases, because JDO insulates you from needing to know much about them.
Many Java developers have been using Java Database Connectivity (JDBC) to store their data in a database. JDBC requires that you learn SQL. When you interact with a database via JDBC, you must view your information model from the perspective of the relational data model, which is very different from Java. Many developers never attain the advantages of object-oriented programming because they never define an object model for their persistent data. Most of the application software becomes very procedural-like code that manages data in the tables of the relational data model.
With JDO, Java becomes your data model and you only need to deal with instances of your classes when interacting with the database. Having just the single data model of Java as the basis of your data management simplifies your development task considerably.
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