Data classes in the Glossary
Defining a compound data class like PII composed of different subtypes is very important to support auto tagging and auto hiding. In addition, it can be important to build up an ontology in one or more business glossaries with terminology that reflects (and is linked to) the significant PII data classes. In this way, you will be able to use the semantic usage and definition reporting on terminology and data elements already auto tagged as well as those you manually tag, classify or semantically map.