SharePoint Object Hierarchy: How it all fits together

A very useful article by Martin Kearn about How objects in SharePoint relate to each other? It gives you a bird eye view of the country called SharePoint.

From the article:
"I often get asked to clarify how all of the objects in SharePoint relate to each. For example, people do not always understanding the differnence between a site collection and a site or how a web application and content database relate to each other.

To help out, I have produced this diagram which I think explains all of the main SharePoint objects and how they relate to each other. I did consider writing some kind of description to go with this, however I think it is better that I just do my best to answer any questions via the comments. If there are any re-occuring themes, I'll add to this article and try to explain them."