Database
A collection of related data stored in one or more computerized files in a manner that can be accessed by users or computer programs via a database management system.
From: sparc.airtime.co.uk/users/wysywig/gloss.htm

a collection of related electronic records in a standardized format, searchable in a variety of ways, such as title, author, subject, and keyword. Common examples of databases are the library catalog and citation indexes.
From : www.library.appstate.edu/tutorial/glossary/glossary.html