Entity-Relationship Modeling (ERM) is a database modeling method used to produce a kind of conceptual schema or semantic data model of a system and its requirements in a top-down fashion, often for a relational database.
One of the important features of Database Master is the ability to generate the ER Model of the database physical schema through reverse engineering. The database’s physical schema information will be read and its corresponding ER Model will be generated. Database Master uses the “Crow's Foot” notation for ER models.
For more information about ER Modeling, please see:
http://en.wikipedia.org/wiki/Entity-relationship_model