[ Thanks to Jay
Fink for this link. ]
“DNS came about quite simply because using hostname
resolution was getting to be a severe burden. There was a “Master
Host File” maintained at one time, unfortunately it simply got too
big and cumbersome. Enter the Domain Name System. The Internet
like any other Network has a hierachal structure to it. Both
through IP address schema and Domain Name schema….”
“The DNS Database is a collection of files formatted
specifically for the purpose of Domain Name Resolution. The
database does differ slightly on Primary and Secondary Nameservers.
The files required for the Primary (or Master) Domain Controller
are outlined below.”