Server Report in SWQL

Hello,

I am trying to put together a server report using SWQL.  I do not have any documentation on tables/field names so I am flying blind.  I need items 7,8, 9 in the swql statement below.  Can anyone help me?

1. SELECT
2.     n.NodeID, 
3.     n.DisplayName, 
4.     n.IPAddress, (Delete)
5.     n.MachineType, 
6.     n.Interfaces.DisplayName AS InterfaceDisplayName
7.     Average CPU Utilization %
8.     Physical Memory Utilization %
9.     Virtual Memory Utilization %
10. FROM Orion.Nodes n 
11. ORDERBY n.NodeID

Or can anyone help me find a document that links tables and displays field names so I can stumble through this myself.