What is the difference between AutoCAD Map 3D 2012 and AutoCAD Map 3D Enterprise 2012?

I didn't use this types of Acad

Thanks

AutoCAD Map3D Enterprise is akin to the previous Topobase Client offering for customers who use Oracle to store and manage industry models. AutoCAD Map3D2012 will offer the features and functionality of Topobase Client running on standalone DWG™ files rather than Oracle, giving users the opportunity to use industry models without the need to set up a separate Oracle database environment.