Lecture
This lecture covers the relational model, SQL, relational algebra, and key concepts in database design. It explains the structure of databases, including relations, attributes, tuples, and keys. The importance of integrity constraints and foreign keys is highlighted, along with the translation of ER diagrams to relational tables. The lecture also discusses weak entities, ISA hierarchies, and the differences between SQL and noSQL data models. Various examples and SQL commands are provided to illustrate key concepts in database management.