Using the ER product for more substantial details makes loads of complexity while creating a database model, So so that you can minimize the complexity Generalization, Specialization and Aggregation have been introduced within the ER model. These were being employed for facts abstraction. Where an abstraction mechanism is accustomed to https://andersonvvmpq.tinyblogging.com/the-smart-trick-of-case-study-providers-that-no-one-is-discussing-80469767