| layout | pattern | ||
|---|---|---|---|
| title | Data Mapper | ||
| folder | data-mapper | ||
| permalink | /patterns/data-mapper/ | ||
| categories | Persistence Tier | ||
| tags |
|
A layer of mappers that moves data between objects and a database while keeping them independent of each other and the mapper itself
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