Googlecheckout,Payment completion XML

[sugumar]

I got an xml after completing Google checkout payment.I need to update my database after completing the payment, The xml is like the following.In which stage like "merchant-calculation-callback" the payment completing? \[code\]<?xml version="1.0" encoding="UTF-8"?><merchant-calculation-callback xmlns="http://checkout.google.com/schema/2" serial-number="c2406a1f-6971-4c0f-899e-415ef621dfb46">\[/code\]