The persistence layer is used to solidify the data, as usual, the DAO layer, which operates the database to put the data into storage
The business layer is used to implement the overall business logic such as the foreground obtains the data, the logic layer parses this data, the validation such data and so on operation
The presentation layer is a good explanation of the Web page you're seeing. Some of the interfaces belong to the presentation layer and can be implemented with some html,jsp,swing.
As for MVC, the Model View controller (control) corresponds to
In the javaweb is very good understanding of the XX system, the front page belongs to the view through the foreground background persistence layer of a set of models (ejb,spring to achieve) and connected to the background of the front desk logic operation is the controller (struts to achieve)
What is the understanding of Java three-tier architecture, persistence layer, business layer, and presentation layer? What's the difference between the MVC three-tier model?