Database Types

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Types of Databases
Databases can be classified according to the number of users,
o   Single user database - A single-user database that runs on a personal computer is called a desktop database
o   Multi user database
·         Workgroup database - the multiuser database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization
·         Enterprise database
Databases can be classified according to the database location(s),
o   Centralized database - a database that supports data located at a single
Site.
o   Distributed database – a database that supports data distributed across several different sites
The most popular way of classifying databases today, however, is based on how they will be used and on the time sensitivity of the information gathered from them.
o   operational database (sometimes referred to as a transactional or production database) - A database that is designed primarily to support a company’s day-to-day operations
o   data warehouse - focuses primarily on storing data used to generate information required to make tactical or strategic decisions.

An XML database (Extensible Markup Language) supports the storage and management of unstructured and semi structured XML data. Semi structured and unstructured data can be referred to as very valuable information that can be found on company e-mails, memos, documents such as procedures and rules, Web page contents, and so on 

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