<ul><li>The Data Mapper pattern is an enterprise architecture pattern that separates business logic from data access logic.</li><li>It introduces an intermediate layer (the "Mapper") for transferring data between the domain model and the data source.</li><li>Java implementation of the Data Mapper pattern is demonstrated using in-memory persistence with a HashMap.</li><li>This approach is useful for educational environments, prototypes, or validating architecture before connecting to a complex persistence system.</li></ul>

Enterprise Design Patterns: Applying the Data Mapper pattern with Java

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