11+ Design Explain The Entity Relationship Model Example Download Zip PNG. For example, during conceptual design there is no need to worry about performance. The entity relationship model at a basic level, databases store information about distinct objects, or entities, and the associations, or relationships a popular approach to conceptual design uses the entity relationship (er) model, which helps transform the requirements into a formal description of.
As a simple example, students and courses are entities;
An entity in this context is an object, a component of data. For example, an employee's social security number might be the employee's key attribute. Week 3, semester 2, 2017/18. The entity relationship model has the purpose of make a model of the problem and let you understand the problem, so in the end you can generate a good relational model to have the most efficient model for you database.