Using XML for data transfer between B2B applications

DeveloperWork's just release this article on 'Embed binary data in XML
documents three ways'.  It specifically discusses using XML for data
transfer for B2B applications .

The article goes over three types of embedding binary data:

Type 1: Represent the binary data by means of external entity and notation
Type 2: Represent the binary data using MIME data types
Type 3: Embed the binary data in CDATA section

article at:
http://www-106.ibm.com/developerworks/xml/library/x-binary/index.html?open&l=136,t=gr,p=xb2b