controlling data redundancy

Redundancy means duplicacy of data or repetitive data. In distributed database case the data is stored in different systems . So the answers is yes there can be redundancy of records / data.

In distributed database , data is stored in different systems. Since the data is distributed there is redundancy of records.

Data redundancy

Lack of data redundancy

Data inconsistency

Data security

Duplication of data is data redundancy. It leads to the problems like wastage of space and data inconsistency.

coding redundancy

interpixel redundancy

psycovisual redundancy