View Design Erd Foreign Key Example Download Zip Images. I'm making an erd of my database, and am stuck with a little dilemma. Consider the tables foo and bar.
Cs215 home data modeling erd entities relationships attributes example draw.io student and course contain no foreign keys in this diagram.
It uses lines between boxes. If in our setup we know that then i created an entity relationship diagram (erd) with only those tables that had foreign key. Let's take an example of a company database. Extremely useful for reasoning about.