What is the primary purpose of database normalization?

What is the primary purpose of database normalization?

• A. To Reduce Data Redundancy And Improve Data Integrity
• B. To Increase Data Redundancy For Performance
• C. To Store Data In A Single Large Table
• D. To Optimize Query Caching

Answer: (A)

Normalization aims to minimize data duplication and enforce data dependencies so the database remains consistent as it grows. By splitting information into related, smaller tables and linking them with keys, each fact is stored in one place, preventing the same data from existing in multiple places. This design makes updates, deletions, and insertions safer and easier, because a change affects only a single location rather than many scattered records, which reduces anomalies and inconsistencies. In short, it preserves data integrity and saves space by eliminating redundancy. The other options reflect performance considerations or bulk-storage choices rather than the fundamental goal of organizing data to avoid duplication and maintain consistency.

Normalization aims to minimize data duplication and enforce data dependencies so the database remains consistent as it grows. By splitting information into related, smaller tables and linking them with keys, each fact is stored in one place, preventing the same data from existing in multiple places. This design makes updates, deletions, and insertions safer and easier, because a change affects only a single location rather than many scattered records, which reduces anomalies and inconsistencies. In short, it preserves data integrity and saves space by eliminating redundancy. The other options reflect performance considerations or bulk-storage choices rather than the fundamental goal of organizing data to avoid duplication and maintain consistency.