Difference between XML and XMI?

Question

Can some one shed some light on the difference between XML and XMI? Can XMI be used in place of XML?

Answer 1

OK, let's try this again.

No, you cannot use XMI in place of XML. XMI is a specific use of XML.

XMI can only be used to exchange metadata information in accordance with the OMG standard. XMI is a specific application of XML. XMI can only be used for XMI purposes. XML, on the other hand, can be used for all XML applications, including XMI.