pointer to a table

Hi,

Is there any feature in postgres which gives a pointer to a row
in a table ? I was previously using Illustra as my database as I
needed the object oriented features. Since there is not much support
for Illustra I thought of shifting to Postgresql. But in Illustra
there was the feature of getting a pointer to an object of type
some_type by using the following function
ref (some_type)
Is there any such feature in postgres? Or is there some way i can
get the value of attributes in a row by using just the OID of that
row?

R.Rahul

4th Yr BTech
Computer Science and Engineering
IIT-Bombay
INDIA - 400076
email : rrahul(at)cse(dot)iitb(dot)ernet(dot)in