layout	pattern
title	Data Mapper
folder	data-mapper
permalink	/patterns/data-mapper/
categories	Persistence Tier
tags	Java Difficulty-Beginner

Intent

A layer of mappers that moves data between objects and a database while keeping them independent of each other and the mapper itself

Applicability

Use the Data Mapper in any of the following situations

• when you want to decouple data objects from DB access layer
• when you want to write multiple data retrieval/persistence implementations

Credits

• Data Mapper