Is there an easy way to import XML into an Oracle database?

Question

It would appear that HL7 CDA, a form of HL7 V3 is XML.

Oracle seems to have a lot of tools for the import of XML.

I have the need to accept Meaningful Use Stage 2 data which is in HL7 CDA format and put it into an Oracle database.

What is the simplest way to;

1. Create an Oracle Schema based on the specific XML structure that I will be accepting?
2. Import the XML files that I receive into that schema?

My favorite tools are PL/SQL, and VB.NET.