Foreign key is a field in a table that uniquely identifies a row in another table or same table. In this foreign key in ER diagram example C the foreign key is marked as FK.
You can easily edit this template using Creately's database design tool. You can export it in multiple formats like JPEG, PNG and SVG and easily add it to Word documents, Powerpoint (PPT) presentations, Excel or any other documents. You can export it as a PDF for high-quality printouts.