Comparison of Whois with RWhois

Whois
Database registered ownership of IP addresses.
It is an intensive database.

RWhois
Distributed Whois database.
Using "Refferal" directive in its objects, we can construct a distributed database.
We can update the data dynamically.
For instance,
rwhois -h root.rwhois.net 212.227.226.0
%referral rwhois://rwhois.arin.net:4321/auth-area=0.0.0.0/0