VSTS load test table : WebLoadTestRequestMap

Question

I am refereing to this url: http://blogs.msdn.com/billbar/articles/529874.aspx

I have couple of questions about the vsts load test database scheme:

1. How the data is inserted in the table: WebLoadTestRequestMap ?

I do not see any stored procedure doing the insert in this table?

I am trying to figure out what is 'RequestId' column means, does it mean the order in which particular 'requesturi' issued in a load test run ?

But after some observation, looks like this can not be true. I am quite sure about it but wanted to confirm it.

I think this column just stores incremental value for each new row inserted??

1. Can we customize the load test DB as per my requirement?

2. I see so many views, i am not sure what they are used for ?