Reference Data Management
A first characteristic of reference data is that it will be ubiquitous throughout your operational environment (i.e. your databases, applications, ETL, scripts, ...). For example, your database records will contain columns like "CUST_TYPE", in which you will find a limited set of values like "GLD_CUST" and "SLV_CUST". Their purpose is to classify data so that you can treat your Silver Customers well and Gold Customers even better. The business rules and processes differ for both, and business people need to act accordingly. Reference data has key strategic business value, and needs to be governed as such.