View Design The Er Model Example Download Zip Pics. An entity is a thing or object in real world that is distinguishable from surrounding environment. Er model is good for designing databases as its easier to represent, but we should use relational model to as we all know that er model can be represented using er diagrams which is a great way of so let's take a few examples of er diagrams and convert it into relational model schema, hence.
To convert this to dimensional.
■ a database can be modeled as: ● a collection of entities, ● relationship among entities. Design choices for er conceptual design. For example, if you were to load a pickled model from the zip file, you'd write something along these lines: