Slowly Changing Dimensions - SQL Server Integration Services Design Patterns - page 354

Figure 13-4 . Historical attribute options
The final page of the wizard ( Figure 13-5 ) lets you enable support for inferred
members. An inferred member is created with minimal information—typically just the
business and surrogate keys. It's expected that the remaining fields will be populated in
subsequent loading of the dimension data. Although the wizard enables inferred mem-
ber support by default, for most forms of SCD processing, you will not need it.