Instructions to create extended dimensions and describe the types of extended dimensions that you can define for creation during the transformation phase of data set construction.
Derived dimensions make up another category of dimensions used by the Insight Server. As the name suggests, derived dimensions are created from existing extended dimensions or metrics. You do not define derived dimensions within a Transformation Dataset Configuration file as you do extended dimensions. Instead, you define them as individual .dim files within an inherited profile or a data set profile.
See Extended Dimensions for steps to create a derived dimension.