Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information on it. (Samuel Johnson)
Data are raw facts. A database is a collection of digital items, a ‘large, regularly updated file of digitized information.’1
The two most common types of databases are bibliographic and full-text:
A bibliographic database contains electronic entries called records containing a uniform description of a specific document, usually retrievable by author, title, subject heading (descriptor), or keyword(s), and usually containing citations and abstracts or summaries ...