If your application offers standard functionality – such as an online banking or ticket booking application – then its ER diagram need not be created from an empty canvas. If you’re not familiar with the work a data modeler does, you can get an idea by reading about the basics of data modeling in 10 minutes.Īny application that uses a database should have in its design documentation an ER diagram that reflects the structure of the stored data. Eventually, that blueprint is ready to become the final product – in the case of the architect, a house or a building in the case of the data modeler, a database. Data modelers use the ER diagrams like architects use their drawing boards: on an empty canvas, they place the elements that make up the structure of what they are going to build. We’ll also talk about some ideas to extend the model.Īn ER diagram is a blueprint for creating the foundations of any application that uses information stored in databases. In this article, you will get a complete database model for online shopping as well as a step-by-step guide to building it. If you need an ER diagram for an online shopping system, look no further.
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