Database Concepts — Chapter Summary

A file is a container used

A file is a container used to store data in a computer. File systems can store data, but they do not provide built-in mechanisms for easy retrieval, c

Redundancy means the same data

Redundancy means the same data are duplicated in different places or files. In the school example, student names and guardian details may appear more

Data inconsistency occurs when the same

Data inconsistency occurs when the same data stored in different places do not match. If a name or contact detail changes in one file but not another,

Data isolation means related data

Data isolation means related data are stored separately without proper links or mapping. Separate files need separate programs for access.

A DBMS is software used

A DBMS is software used to create and manage databases. It helps store, modify, retrieve, and manage data through an interface between users and the d