Relational vs NoSQL: Evolution and Comparison

This lecture discusses the historical debate between the relational and non-relational data models, starting with the CODASYL vs SQL conflict and the birth of NoSQL. It covers the key characteristics of both models, such as data independence, schema flexibility, and scalability. Examples of key-value stores, document stores, and extensible record stores are presented, along with their respective data models. The lecture concludes by highlighting the evolution of database management systems towards big data management. The instructor emphasizes the importance of understanding DBMS principles and the reasons behind the coexistence of relational and non-relational approaches.