Data Modelling Using Entity-Relational Model and Relational Model ArticlesIntroduction to Entity-Relational Model and Relational Model Entity, Entity Types and Entity Sets Attributes and Types of Attributes Keys in DBMS Relationship Types and Relationship Sets Structural Constraints in ER Concepts of Generalization and Specialization Doc navigation← Database Concepts and ArchitectureThe Relational Algebra and Relational Calculus → How can we help? Name Email Subject Message