Handling Transactional-Level Data - Expert Cube Development with SSAS Multidimensional Models - page 116

Drillthrough actions
The definition of a drillthrough action on a cube is simply a set of metadata that
is passed to the client. This metadata defines a set of columns that will be used by
the client to build the DRILLTHROUGH statement that will be sent back to the server.
There is no direct DRILLTHROUGH statement generation made in this metadata, except
for the default drillthrough setting that we will cover later in this section. In the
following screenshot, we can see the Actions panel displaying the settings for a new
drillthrough action. We will refer to the action field names in the following part of
this section.