Legacy System Data Migration

Hi @CStaich,

Alternatively you could:

  • load all the legacy tables into a Workspace Dataflow,
  • load all accompanying dimension mapping tables into the same Workspace Dataflow.
  • Perform the replacement of the legacy ID’s by the new ID’s in this Dataflow.
  • Shape all output tables so they match your new ERP column headers
  • Dataflow refresh only has to be performed once and doesn’t have to be scheduled because this data will now never change.
  • Decide if Dataflows could be perferred over querying directly against the new ERP system.
  • (If so, create a new Dataflow for all Queries against the new ERP system and schedule refresh)
  • In Power BI you’ll query the legacy system Dataflow fact tables
  • and query the new ERP system fact- and dimension tables (directly or via a dataflow)
  • You can append all fact queries because the column headers match
    .

I hope this is helpful.

2 Likes