This document introduces key concepts about databases including: 1. A database is a collection of information stored in a structured way, with examples including police databases, DVLA, and health clubs. 2. Data is organized into data files, records, and fields, with a field being a single piece of data, a record containing information about one person, and data files storing all records. 3. Electronic databases have advantages over manual systems like taking up less space, being easier to search and sort, and allowing easy amendments and backups.