each entity, either a parent or a child, is similar in that they have the same attributes. However, the only way of denoting a parent is that it has children underneath it. A parent may also have a parent, but it may not if it is the top line item.
Any recommendations on table structure? Trying to minimize data duplication.
relationID pk unique
itemName fk REFERENCES table2(itemName)
Data duplication does not exist in any properly designed database schema. I would recommend obtaining a book on database theory. What you seem to be referring to are key relationships between tables. However, you are not using the correct terminology, thus intelligent answers are unlikely to follow. Google also has many hits relevant to introductory database design.
How to spot a hosting reseller:
a. ping "web-hosting-company".com. Search that IP at arin.net.
b. the company displayed by arin.net has full network and likely server control and is the real provider
A 99.999% SLA means nothing when 90% of the service continuince is beyond the control of the reseller.