Data Acess object Methode Follow code student app
The advantage of using data access objects is the relatively simple and rigorous separation between two important parts of an application that can and should know almost nothing of each other, and which can be expected to evolve frequently and independently. Changing business logic can rely on the same DAO interface, while changes to persistence logic do not affect DAO clients as long as the interface remains correctly implemented. can be used in a large percentage of applications - anywhere data storage is required. hide all details of data storage from the rest of the application. act as an intermediary between your application and the database. They move data back and forth between Java objects and database records. allow ripple effects from possible changes to the persistence mechanism to be confined to a specific area
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