Filev, Andrew. Professional UML Using Visual Studio .Net. John Wiley & Sons, October 28, 2005. ISBN 9780764558757. с. 276. Посетен на 2012-12-12. The cornerstone of the Visio Data POroject will be the Database Model Diagram (DMD). [...] The DMD is mainly an Entity Relationship (ER) diagram with project management capabilities.