Send relational database record to external XML parser

I have a relational Zoho database, with a few dozens of forms. The relationship between forms is created using drop-down import fields and the records are identified by a customized record number.
Every record is identified by costumized number which is the same in all tables.
I want to be able to export a record (identified by a customized record number in all tables) from the database to an external XML parser, at once (using a single click).
Is this possible in Zoho Creator? If yes, how can this be done?
Thank you.