February 2017
Intermediate to advanced
1023 pages
24h 11m
English
book
Spring: Developing Java Applications for the Enterprise
by Ravi Kant Soni, Amuthan Ganeshan, Rajesh RV
Content preview from Spring: Developing Java Applications for the Enterprise
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The DAO design pattern
The DAO design pattern can be used to provide a separation between the low-level data accessing operations and the high-level business services, as shown here:
The DAO layer
In between the database and the business layer, there is a layer called the DAO layer. The DAO layer is mainly used to perform the Create-Retrieve-Update-Delete (CRUD) operation. The DAO layer is responsible for creating, obtaining, updating, or deleting records in the database table. To perform this CRUD operation, DAO uses a low-level API, such as the JDBC API or the Hibernate API. This DAO layer will have a method for performing the CRUD operation. It ...
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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.