This article explains the Relational Data Model, its core components, and its role in modern RDBMS.
- •Data is organized in tables with rows (tuples) and columns (attributes), queried via SQL
- •Keys (primary, foreign, candidate, composite) uniquely identify tuples and establish inter-table relationships
- •Three relationship types exist: one-to-one, one-to-many, and many-to-many, enforced through foreign keys
- •Normalization (1NF, 2NF, 3NF) reduces redundancy and anomalies but increases join complexity
- •Advantages include flexible SQL querying and data independence; limitations include rigid schema and scalability challenges
This summary was automatically generated by AI based on the original article and may not be fully accurate.
Databricks
Meta
Dropbox
Spring
Google Cloud