Reference data


Reference data is data used to classify or categorize other data. Typically, they are static or slowly changing over time.
Examples of reference data include:
Reference data sets are sometimes alternatively referred to as a "controlled vocabulary" or "lookup" data.
Reference data should be distinguished from master data. While both provide context for business transactions, reference data is concerned with classification and categorisation, while master data is concerned with business entities. A further difference between reference data and master data is that a change to the reference data values may require an associated change in business process to support the change, while a change in master data will always be managed as part of existing business processes. For example, adding a new customer or sales product is part of the standard business process. However, adding a new product classification or a new customer type will result in a modification to the business processes to manage those items.

Externally-defined reference data

For most organisations, most or all reference data is defined and managed within that organisation.
Some reference data, however, may be externally defined and managed, for example by standards organizations. An example of externally-defined reference data is the set of country codes as defined in ISO 3166-1.