dynamic schema usage in biztalk

Hi all,

First of all I’m a biztalk newbie, we run 2006 here with plans to migrate to 2006 R2 in the future. I have a schema that I need to work with called Siri, which is public at:

http://www.kizoom.com/standards/siri/schema/1.0/siri-1.0.zip or http://www.kizoom.com/standards/siri/schema/1.0/siri.xsd for the root xsd document.

I have sucessfully imported this schema into my biztalk project, however, I am finding it difficult to get my head wrapped around how to use this since there are so many xsd:choice and xsd:group nodes. Also there is only one targetnamespace at the root element.

My project is to consume estimatedtimetables of buses and then insert it into a database. Working with the schema I’m finding it difficult to promote elements in order to filter and create/work with mappings (haven’t really got that far yet).

Can anyone point me in the right direction in some documentation/websites? has anyone worked with a schema like this? I can post up a sample xml payload if anyone would like to have a look..

thanks for the help in advance..