Looking for PDM/PLM software with true ERP integration

I recently attended the Orange County SolidWorks User Group meeting where a guy from KeyTech software gave a presentation on PDM vs. PLM.   He had a good point that many PDM/PLM programs out there (like Enterprise PDM) claim to handle "items" which is ERP software speak for a part or object you track/manufacture/etc. using an ERP system like SAP or Oracle.  This is important to me because you could have a model in SolidWorks called AB12345 with its drawing AB12345 rev A.  And this model could have multiple finished good item numbers like D1234S for steel, or D5678B for bronze in the ERP system.   So those 2 items are completely unique in the real world.  The ERP system will have unique Bills of Material for each, and possibly different manufacturing methods.   But on the SolidWorks side, the one model will work for either.

So his point was that the PDM system must have a way of dealing with this 1 model/drawing with multiple ERP item relationship.  He said that Enterprise PDM claims to handle items, but that they do it by simply adding an "Item" field in the custom properties pulldown.  I would like to know if anyone out there is using Enterprise PDM (or any competing product) to know if it truy handles the item like and ERP system would handle it.  I'm not saying to take the place of an ERP system, I'm saying is the integration really there?

Thanks.

Hans