Mike -- This would work well in the simple case where a schema does not include/import another schema. What if the included/imported schema has a conflicting or different annotation - we are then back to precedence rules.. Suman Kalia IBM Toronto Lab WebSphere Business Integration Application Connectivity Tools Tel : 905-413-3923 T/L 969-3923 Fax : 905-413-4850 Internet ID : kalia@ca.ibm.com ----- Forwarded by Suman Kalia/Toronto/IBM on 11/23/2004 08:32 AM ----- mike.beckerle@ascentialsoftware.com Sent by: owner-dfdl-wg@ggf.org 11/22/2004 06:38 PM To dfdl-wg@gridforum.org cc Subject [dfdl-wg] DFDL and binary XML again Folks, If you just take any XSD, and add a "top level" DFDL annotation including: repType="binary" byteOrder="bigEndian" .... And as well you must provide other top-level defaults for date formats, how nulls are represented by default and so forth. Doing this and then writing out the data should get you a quite standard binary format for XML transmission which ought to satisfy much of the needs of the binaryXML community. I found discussion of DFDL on public-xml-binary@w3c this week, and this notion crossed my mind that while binaryXML formats can't solve the DFDL problem, DFDL *CAN* solve the binaryXML problem. ...mikeb