How can I find invoices and download from vendors

Hi

I have an EBS 12.1 where I cannot start the frontend and I'm stuck with the SQL

I have found several BLOBS and can download them with FNDGFU, but I cannot seem to find a reference from file_id in FND_LOBS and point this to an invoice id

Is there anyway I can find the datamodel for the EBS and can look at the recerences to FND_LOBS table?

I have found the below, but how can i put this together with the FND_LOBS table

Hope somebody have done something similar

Cheers

Lars

Denmark