Dataflow Asynchronous Load with Dataset

Hi all :),

I have short question that I was not able to find, or which wasn't explicitly explained in the dataflow documentation.

For my report I will be needing two dataflows, one from Active Directory and one from a Sharepoint list. Another datasource will be SAP BW. I want to run hourly loads. Loading all sources in full however takes too long. So with a dataflow is it possible that the two above mentioned sources are loaded seperatly from the Datatset that contains the SAP BW source?

My understanding is that the data from the dataflow can be grabbed in "realtime" when the report is running and is not bound to the refresh of the dataset, since it is in the same storgae - is that correct? Any answers are much appreciated.

Cheers,

Christian