Relational Model
The relational model is a conceptual framework for structuring and managing data in databases, introduced by Edgar F. Codd in 1970. It organizes data into tables (relations) with rows (tuples) and columns (attributes), using mathematical set theory to define operations like selection, projection, and join. This model underpins most modern relational database management systems (RDBMS) by ensuring data integrity, consistency, and efficient querying through structured relationships.
Developers should learn the relational model when designing or working with structured data applications, such as financial systems, e-commerce platforms, or enterprise software, where data integrity and complex queries are critical. It provides a robust foundation for understanding SQL, database normalization, and ACID transactions, enabling efficient data storage and retrieval while minimizing redundancy and anomalies. Mastery is essential for roles involving database design, backend development, or data analysis with relational databases.