Saturday 28 January 2012

Databases and Database Users


databases


n A Database: is a collection of related data.
n Database properties:
Ø It represents some aspect of the real world
[miniworld or Universe of Discourse (UoD)]
Ø It is a logically coherent collection of data with inherent meaning
Ø It is designed, built and populated with data for specific purpose

*** Some other properties :


n A Database can be of any size ranging from few number of records have hundreds or thousands bytes to gigabytes or terabytes
n A Database may be generated and managed manually or it may be computerized
n The computerized choice may be by a group of application programs implemented specifically for that application or by a:
Database Management System (DBMS)

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