COMM-5121EL Study Guide - Final Guide: Entity Framework, Database Model, Business Rule

• School: Laurentian
• Department: Commerce and Administration
• Course: COMM-5121EL
• Professor: Imane Ricard

Document Summary

A business rule is a rule that defines or constrains some aspect of business and always resolves to either true or false. Business rules are intended to assert business structure or to control or influence the behavior of the business. An entity-relationship diagram (erd) is a data modeling technique that graphically illustrates an information system"s entities and the relationships between those entities. An erd is a conceptual and representational model of data used to represent the entity framework infrastructure. A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated.