Creating ER Diagrams with MS Visio
Getting Started with MS Visio
As soon as you start Visio you will either need to identify a new drawing type (category) or select an existing file. For this example, select a new drawing with the Database category and the Database Model Diagram template.
http://www.sethi.org/classes/cet415/lab_notes/lab_03.html
OR
http://www.databasejournal.com/features/oracle/article.php/3529531/Database-Modeling-Using-Visio.htm
