The Data Access Object (DAO) pattern provides an abstraction layer between the business logic tier (business object) and the persistent storage tier (data source). Business objects access data ...

There are many options for building persistence layers. Data Access Objects (DAO) is a popular design pattern for building the persistence layer of a J2EE application. Developers use this design ...

you can use the Data Access Object pattern. Here, data access logic is encapsulated with a bridge between a business object and an abstract data access object. You then just write the vendor ...