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