Dear Sir, I've read your requirement and the attached database table schemas / XML file carefully. And I'm quite sure I can do this task easily.
I've more than 8 years development experience with C#, SQL Server, SOAP (XML) Web Service, and WCF based web services. And in recent 3 years I'm working on middle size enterprise applications which are using web service and database technology broadly.
If you want to know more information about myself, please let me know.