Persistence

The Persistence layer enables you to model physical storage including data sources, upgrades, data extracts (dumps), and ETL activities.

Model Description Language Business Model Elements

• Datasource - A datasource is a logical representation of physical storage that is used to create, read, update and delete object instances.
• RelationalDatabase - 
• FileStorage - 
• XML - 
• ServiceDatasource
• CompositeDatasource

• ETLActivity - An ETL activity.

Other

• Upgrades - The set of upgrade steps for all versions of a DataSource.
• Dump Files - Used to serialize the contents of a datasource to and from disk (not used much anymore)