Why Computer Networking is important if you have a business?

For me networking is very important in business specially if your business requires computers like Internet Cafe or in the Office.I'll explain it in a chart. 

One company----One Internet connection----one or more networks----many end users---one database and everybody can have access to it.

Hope in this information will help the readers to understand why networking is very important. Computer Networking is proven to everybody this is the standard system use if you have lot of computer. You can monitor all the computer if you are in a network.but please be careful to the viruses that spread in your computer. Dont Forget to install and anti-virus in your computer.