March 2002
Intermediate to advanced
464 pages
8h 51m
English
book
Enterprise JavaBeans™ Component Architecture: Designing and Coding Enterprise Applications
by Gail Anderson, Paul Anderson
Content preview from Enterprise JavaBeans™ Component Architecture: Designing and Coding Enterprise Applications
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6.4. Transaction Overview
Business transactions are frequently carried out in a series of separate steps. Consider the following example where a customer purchases an airline ticket online. Here we use pseudocode that shows the required steps in a transactional environment.
try {
startTransaction();
reserveFlight();
payForFlight();
commitTransaction();
} catch (Exception ex) {
rollbackTransaction();
}
For this transaction to complete, all steps must be successful. Otherwise, data may be inconsistent. These separate steps make up a transaction context, which is viewed as a single operation.
A transaction that commits means that all steps in the transaction were successful and data is saved. A transaction that rolls back means that one or more ...
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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.
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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.