In a relational database, the only data redundancy (duplication) exists in the common columns (fields) used for relationships.

Name: In a relational database, the only data redundancy (duplication) exists in the common columns (fields) used for relationships.
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In a relational database, data redundancy is minimized by normalizing the data into tables. The only data redundancy that exists is in the common columns used for relationships, which is necessary to maintain the integrity of the data.

In a Relational Database, the Only Data Redundancy (Duplication) Exists