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Component of Database System

Basically there are four component of Data System:
1.    Data 
2.    Hardware
3.    Software
4.    Users  
•Database systems are available in smaller or larger systems
Single-user system:
–System in which at most one user can access the database at any given time
Multi-user system:
–System in which many users can access the database at the same time
•Data in the database is both integrated and shared
–database is a unification of several distinct files
–The redundancy among the files are partially or wholly eliminated
Shared :
–Different users can have access to the same data
–I.e, database can be shared among different users