508 B
508 B
layout, title, folder, permalink, categories, tags
| layout | title | folder | permalink | categories | tags |
|---|---|---|---|---|---|
| pattern | Data Access Object | dao | /patterns/dao/ | pattern_cat | pattern_tag |
Intent: Object provides an abstract interface to some type of database or other persistence mechanism.
Applicability: Use the Data Access Object in any of the following situations
- when you want to consolidate how the data layer is accessed
- when you want to avoid writing multiple data retrieval/persistence layers