The Computer Centre DataBase (CCDB) has been in operation for over thirteen years. This paper discusses how the project was initiated, the structure of the database and its interfaces and services, and how it has evolved from the time of mainframe computing to today's situation of highly inter-related distributed computer services. The primary CCDB services provided include management of computer services, accounts, e-mail addresses and e-mail routing, resources (such as CPU, disk space) and provision of data for the division's information dissemination tools such as xwho, phone and phonebook. It feeds data to these tools and many other database applications CERN-wide and uses/provides data from/to HR (Human Resources) and Landb (IT networking database)
