Re: about"Peter Chen"

For me the novel thing was that ER model was originally proposed as yet another logical i.e. representational model. The use of ER as conceptual i.e. semantic model with mappings to the prevalent logical models of relational, hierarchical and network, only followed later.

Another conceptual model would be ORM.

hth
k Received on Wed Sep 29 2004 - 05:18:34 CDT