The Core User Directory (CUD) is a central reference point or a directory that stores details of people associated with the University of Oxford. The directory holds information about students, researchers, tutors, staff and alumni. CUD consolidates records from a number of data sources. Every CUD record has multiple attributes such as first name, surname etc. It becomes easier to distinguish a CUD record as unique when more attributes are stored within a record.
For every data record entered, a CUD unique identifier (CUD ID) is assigned after the data is matched, consolidated and reconciled. As a result of these processes, a single CUD record (with many attributes) is created for each person associated with the University. By providing a CUD ID, duplication of information is reduced within these systems.