Classify of Indian Gamings

until today, I find a clear explaination on the classification of Indian games.
it's from http://500nations.com/Indian_Casinos.asp.

Class I Gaming
Defined as "traditional tribal gaming and social gaming" with minimal prizes.
There is no regulation outside of the tribal government.

Class II Gaming
Defined as gambling played exclusively against other players and not the house.
Examples are bingo, poker, and other “non-banked” card games.
These games are permitted on Indian land as long as they are legal elsewhere in the state.
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Class III Gaming
Defined as gambling played against the casino.
Includes slot machines, blackjack, craps, roulette, and "all forms of gaming that are not class I gaming or class II gaming."
Requires a compact with the state.

Put SQL Server to single user mode

In order to have exclusive access to the database, the following command can be issued, it will kill all connections to the specified database except for the connection that we currently have to the database.

alter database xxx
set single_user
with rollback immediate

the following command bring it back to multiple user access.
alter database xxx
set multi_user