Which of the following best describes a derived attribute in an ER diagramAn attribute that uniquely identifies each entity within an entity set.An attribute that is derived from other attributes in the database and does not need to be stored explicitly.An attribute that can take multiple values for a single entity.An attribute that describes the number of instances of a relationship that can be associated with a single instance of an entity.Next

9. Explain the difference between an entity and an attribute in an ER diagram.

in ER diagram representing employee database, address of an employee is a good example ofA Derived attributeB Hierarchical attributeC Composite attributeD Simple attribute

Which symbol denote derived attributes in ER Model?

In ER Diagram, a relationship between two entities of similar entity type is called a

What is a derived attribute, and explain why it might not be prudent to save derived attributesin a database?