Database and Administration

What Does Database Means?
Traditional databases are organized by fields, records, and files. A field is a single piece of information; a record is one complete set of fields; and a file is a collection of records. For example, a telephone book is analogous to a file. It contains a list of records, each of which consists of three fields: name, address, and telephone number.

Reference:http://webopedia.com/TERM/d/database.html

Database administration is when the yahoo mail ask you some fields to know who are you and they ask you what username and when you press check availability they will look in there data and if its available they will say it to you in the username space and if you press make an account after it yahoo mail will say that you have successfully made an account.