Most J2EE (Java 2 Platform, Enterprise Edition) applications strive to abstract the database tier by employing the Data Access Object (DAO) design pattern. However, these implementations typically ...

You can use Factory patterns to create Data Access Object instances. Johnson and Singh suggested that you go further and make them pluggable by using entries in your deployment descriptor or using ...

Persistence is one of the greatest challenges for building applications. There are many options for building persistence layers. Data Access Objects (DAO) is a popular design pattern for building the ...