A(n) _____ occurs when data are stored redundantly in a database and only some of the instances are updated when a change is needed.
A) error
B) update anomaly
C) data integrity concern
D) storage efficiency
E) none of the above

Question

Quizplus · Accepted Answer

This describes a specific type of database anomaly known as an update anomaly, in which redundant data leads to inconsistencies when only some instances are updated but others are not. A is too general, C is a broad term that encompasses a range of issues, D is irrelevant, and E is not the correct answer.

A(n) _____ Occurs When Data Are Stored Redundantly in a Database