Er Diagram For Schema. In er diagram key attribute is represented by an oval with underlying lines. Entities and simple attributes.
I cant draw er diagram for my project websitein my project i have 4 database tables so how i creat er diagram 14032014 reply. You may preferably keep the same name for the entity or give it a. Click file data modeler print diagram to image file.
This er diagram tool also supports importing schema from mysql oracle and sql server allowing you to generate erd fast and easy.
Rectangles are named with the entity set they represent. Er diagrams are most often used to design or debug relational databases in the fields of software engineering business information systems education and research. This er entity relationship diagram represents the model of railway reservation system entity. When documenting a system or process looking at the system in multiple ways increases the understanding of that system.