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Database Normalization: 1NF, 2NF, 3NF and ERD Mappings

#Database Design#SQL Normalization#ERD Blueprints
Jul 8, 20261 min read

Database normalization is essential for application performance and data integrity.

The Normalization Forms

Minimize redundancy by following structural forms:

  • 1NF: Remove duplicate columns and ensure atomic values.
  • 2NF: Meet 1NF and ensure all non-key columns depend on the primary key.
  • 3NF: Meet 2NF and remove transitive dependencies.

Mapping ER Diagrams

Map relationship logic (one-to-many, many-to-many) clearly using visual layouts.

Edule supplies database design templates to guide your schema configuration.

Edule operate strictly within university guidelines. These articles are compiled by vetted subject specialists to deliver conceptual templates and logical structures. Skeletons should be used to draft your own papers only.