Basic Data Modelling

[Daniel Münch]

Hello,

I have a basic problem with Data Modeling.
I want to build up a small database containing information about servers.

We have several servers with different OS and different applications running on top of if. For each OS or application type different information (different columns) should be available.
So my question is: Should I have one central table "servers" and then separate tables for every OS or application type? Or should I put it all in one table and only fill out the fields I need to?

If I should make separate tables: How can I join them? This means I would have to create an "ID" column for each application / OS and use it as a foreign key, right?

Thanks in advance,
Daniel