Transportation doubt

Hi every one

Can someone please clarify my doubts

1. What is administrative client and what is configuration client ? And how many more types of clients are there ?

2. What is client copy ?

3 what is system copy ( in transports )

4. What is transport of copy in SE09 tcode ?

5. How to copy queries between two info providers ?

6. How to delete a querry?

Thanks in advance

Charan