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PUBLIC MARKS from Elryk with tag dao

September 2009

JPA implementation patterns: Service Facades and Data Transfers Objects

In my previous blog on JPA implementation patterns, I touched upon the subject of the DTO and Service Facade patterns. In this blog I will explore why we would even need such patterns and put these patterns and the DAO pattern into the broader context of JPA application architecture.

January 2008

Core J2EE Patterns - Data Access Object

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Access to data varies depending on the source of the data. Access to persistent storage, such as to a database, varies greatly depending on the type of storage (relational databases, object-oriented databases, flat files, and so forth) and the vendor implementation.

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