Chandu,
Go through below links
SAP-OT!...How they got Married...?!? what is thier Story? - gives the tight relation of OT with SAP
SAP DMS - gives you how it differentiates than a normal SAP DMS
SAP xECM - Demo - Gives the feels of xECM
SAP Portal Content Management by OpenText – An ideal Content Management solution for SAP Portal customers Gives idea about the EP content can be managed using PCM(xECM)
If you have any specific question please ask. Hope this answers your question
Cheers!
Kolusu
