How to generated OXID, OXIDParent Colums from database

Hi Guys,

I have a question regarding the 3 fields in the database. How can I generate the OXID ,OXIDPARENTID and OXARTNUM are they hashed or md5?, I am creating a c# application that would encode products to oxarticles table but I dont have an idea on how to insert it there those values so the products can be seen online while encoding in my c# app.

Please let me know that is my concern right now.

Thanks Guys for your good help.