What are the types of Databases?

Databases maybe small or large, limited in accessibility or widely accessible. Databases maybe classified into 4 types: individual, company, distributed,and commercial.

• Individual

The individual database is also called a personal computer database. It's a collection of integrated files primarily used by just one person. Typically, the data and the DBMS are under the direct control of the user. They are stored either on the user's hard-disk drive or on a LAN file server.

• Company

Of course, companies create databases for their own use.  Company databases may be  stored on a central database server and managed by a database administrator.  Users throughout the company have access databases on computers linked to local or wide area networks.

• Distributed

Many times the data in a company is stored not in just one location, but in several locations. 
It is made accessible through a variety of communication networks.The database, then, the distributed database. That, is not all the data in a database is physically located in one place. Typically, database servers on client /server network provide the link between the data. 
For instance, some database information can be at regional offices. Some can be at company headquarters, some down the hall from you, and some even Overseas. Sales figure for chain of department stores, then, could be located at the various stores. But executive at district officer or at the chain's headquarters could have access to all these figures.

Commercial

A commercial database is generally an enormous database that an organisation develops to cover particular subject. It offers access to this database to the public or selected outside individuals for ay fee.
Sometimes commercial data bases also are called information utilities or data banks. An example is NSE Infobase, which offers a variety of information gathering and reporting services. (See figures).