Chapter 49. Late-arriving dimensions in SSIS
SQL Server Integration Services (SSIS) is a great tool for populating data warehouses. Straightforward, common approaches in data warehousing are easy to implement. But certain scenarios can be more complex to implement using SSIS, particularly if you’re moving a lot of data and have aggressive performance requirements. Late-arriving dimensions are one of those scenarios.
Late-arriving dimensions (sometimes called early-arriving facts) occur when you have dimension data arriving in the data warehouse later than the fact data that references that dimension. This chapter discusses several options for handling late-arriving dimensions in SSIS.
A late-arriving dimension scenario
In the ...