Definitions are important, especially in technical subjects because definition describes
very comprehensively the purpose and the core idea behind the thing. Databases have
been defined differently in literature. We are discussing different definitions here, if we
concentrate on these definitions, we find that they support each other and as a result of
the understanding of these definitions, we establish a better understanding of use,
working and to some extent the components of a database.
Def 1: A shared collection of logically related data, designed to meet the information
needs of multiple users in an organization. The term database is often erroneously
referred to as a synonym for a “database management system (DBMS)”. They are
not equivalent and it will be explained in the next section.
Def 2: A collection of data: part numbers, product codes, customer information, etc. It
usually refers to data organized and stored on a computer that can be searched and
retrieved by a computer program.
Def 3: A data structure that stores metadata, i.e. data about data. More generally we can
say an organized collection of information.
Def 4: A collection of information organized and presented to serve a specific purpose.
(A telephone book is a common database.) A computerized database is an updated,
organized file of machine readable information that is rapidly searched and
retrieved by computer.
Def 5: An organized collection of information in computerized format.
Def 6: A collection of related information about a subject organized in a useful manner
that provides a base or foundation for procedures such as retrieving information,
drawing conclusions, and making decisions.
Def 7: A Computerized representation of any organizations flow of information and
storage of data.
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