Archive for 'Computers and Internet' Category
Database Management System
15 June 2007 <A database is a collection of inter-related data, representing information about a specific domain. In other words, every time you group information that can be related to the same subject, you can say that you have a database. For example: a phone list, a CD catalog or a human resource control system of a company.
However, Database Management System (DBMS) is a software that has resources capable of manipulating database information and interacting with user. Some examples of DBMS’s: oracle, sql server, db2, postgresql, mysql, access, paradox, etc.
At last, we have to picture database management system as the set of four basic components: data, hardware, software and users. In other words, database system can be depicted as an electronic data room.
The main goals of a database system are isolating users from internal details of the database (to promote data abstraction) and making data to become independent from applications.