A database is a shared collection of logically related data, designed to the
information need of the organisation
Shared: - All info/data shared are different (or) for different application.
Persistence: - All the data are stored in DB permanently exists.
Validity /integrity/correctness: - The data should be correct with respect to the
real world entity.
Security:-The data should be protected from unauthorised access.
Non-redundant:-Unique data, non-duplicate data.
Independency:-The data of different level should be independent of each other
changes in one level should not
DBMS:It is database management system. A system that allows user to create, define,
maintain a database and provides control access to data.
DBMS is a collection of program that enable users to store, modify, extract/
retrieve the information from DB. Ex: - Ms Access, oracle etc.
Advantage of DBMS over file system
There are several advantages of Database management system over file system.
Few of them are as followings:
Controlling Data Redundancy.
Sharing Of Data.
Integration of Data.
Control over Concurrency.