Week 5:Database Management

Databases, Data, and Information
A database is a collection of data organized in a manner that allows access, retrieval, and use of that
data. Data is a collection of unprocessed items, which can include text, numbers, images, audio, and
video. Information is processed data; that is, it is organized, meaningful, and useful. 
Computers process data in a database into information. A database at a school, for example, contains
data about students,e.g.,student data,class data,etc.
With database software, often called a database management system (DBMS), users create a
computerized database; add, modify, and delete data in the database; sort and retrieve data from the
database; and create forms and reports from the data in the database. Database software includes
many powerful features, as you will discover later in this chapter.