System.Interaction.Logical (Mapping)
uDefined by rules associated with data migration (ETL), web services and similar situations where one set of objects must be mapped to a second set.
ØSystem interaction rules can also define how the various
systems map to the
virtual operational data store (VODS).
uTypical mapping support
ØTake one source object class at a time and describe how
it can be transformed to a
target class using a process flow metaphor.
ØInformatica and Oracle Warehouse Builder use this
approach.
uAlternative method
ØDescribe complex sets of information in a master-detail structure and then describe how to map that complex
structure.
§Does not require a process flow
§Usually results in code generation that runs more
efficiently.