According to the same ISOC study, combining descriptive and usage data, when done properly, makes it possible "to analyse cultural consumption, improve audience understanding, and interpret the relationship to content." Descriptive data provides the context for interacting with the content (for example: the performance, workshop, or lecture), while usage data characterises how the content is actually used.
This is why data gains far more value when these two types are combined, and why the level of detail in descriptive data directly affects our ability to explain choices and identify recurring behaviours.
The study also highlights the essential role of metadata in enabling connections between different databases, and in establishing links between "the qualification of a work or content and the contextual determinants" influencing an individual's engagement with that content.
According to Synapse C, a Québec-based nonprofit specialising in supporting data literacy for cultural professionals, "the ultimate purpose of data is to produce rich information that allows you to understand your audience and then reach them with the most accurate description of your cultural offering. Any discoverability initiative should therefore begin with an assessment of the available data and its quality."