BSE Market Structure and BOLT

#1
Hi all,
1. Does any one know about the EXACT Market Structure of BSE. ie. All its players.
2. Who provides liquidity (are there any Market Makers or Dealers).

Or is it just a big ECN like NADAQ was (an electronic system matching sellers and buyers)

3.Does the Floor exist for operational purposes or is it there just for marketing purposes like NYSE. IF the floors are used then does anyone have a sketch of its floor structure.

4.Can anyone name few big brokers in India.

5.And can anyone please give me an insight into BOLT (technical details if available).

6.What is the ADV of BSE and the execution time for a trade.

7.And are there any Dark pools in existence in India for Institutional traders...
If no, then how does Institutional trading take place....And what is the average volume of shares/execution.

If anyone can even answer parts of it, I would be very gratefull.
Thanks in advance