DBMS

View of data in DBMS narrate how the data is visualized at each level of data abstraction? Data abstraction allow developers to keep complex data structures away from the users. The developers achieve this by hiding the complex data structures through levels of abstraction. There is one more feature that should be kept in mind i.e. the data independence. While changing the … [Read more...] about View of Data in DBMS

Entity Set is a collection or a group of 'entities' sharing exactly the 'same set of attributes'. All entities can be distinctly identified in an entity set. This is because all the entities have a different set of value for some set of attributes. We further classify the entity set into two basic categories Strong and Weak entity set. The collection of entity sets and their … [Read more...] about Entity Set