Get Design Er Diagram Business Rules Example Download Zip Background. • assert business structure • control/influence business behavior • are expressed in terms familiar to end users • govern business rules. An entity set is a group of similar entities and these for example, in student entity, the student address is a composite attribute as an address is.
Refined into a relationship if attribute is a reference to another entity type.
Lucidchart is an online diagram application that makes it easy to create and share professional diagrams. Er diagrams are created based on three basic concepts: • assert business structure • control/influence business behavior • are expressed in terms familiar to end users • govern business rules. A key concept of use case modeling is that it helps us design a system from end user's perspective.