

			      <--\
	       SERVER SESSION     |  */RESULT
		             \---/
CREATE DATABASE/RESULT |  ^
OPEN   DATABASE/RESULT |  |  DELETE DATABASE/RESULT
		       |  |  CLOSE  DATABASE/RESULT
		       V  |
			      <--\
	     DATABASE SESSION     |  */RESULT
		             \---/
		  |  ^
QUERY/TRACE EVENT |  | EXECUTE SPY/RESULT QUERY
		  |  | ABORT TRACE/RESULT QUERY
		  V  | EXECUTE STEP/RESULT QUERY
		       EXECUTE BY TRACE MODE/RESULT QUERY
		       EXECUTE NOTRACE/RESULT QUERY

			      <--\
	        TRACE SESSION     |  */RESULT
		             \---/  */TRACE EVENT

		    |  ^
     INSPECT/RESULT |  | QUIT INSPECT/RESULT
		    V  |
			      <--\
	       INSPECT SESSION    |  */RESULT
		             \---/

