Records are tagged with dimension values when you process your source data into a set of MDEX Engine indexes, using the Information Transformation Layer.

You can set up your Guided Search application to derive dimensions automatically from the source data’s properties. Remember, however, that automatically derived dimensions are flat, unless you specify Sift as the type of the dimension values in the dimension. In this case, the automatically generated dimension is a hierarchy of Sift dimension values. Otherwise, however, you must create hierarchical dimensions manually, in Developer Studio.