Diff between Purchase quotation (From Draft n direct document add)

hi.

i need a small information.

Normally We an add purchase quotation...Directly..

but in my case

I implement approval Procedures  at purchase quotation..

So, If any body Add it first it is going to Draft mode..

We can add purchase quotation 2 ways.

form draft to purchase quotation

       direct purchase quotation.

my question is in data base is there any field

document coming from draft or direct..

plz inform me if u have any information....