Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1132600_3 ( round VARCHAR, winning_constructor VARCHAR, pole_position VARCHAR, fastest_lap VARCHAR )

### Question ###
Which round had Michael Schumacher in the pole position, David Coulthard with the fastest lap, and McLaren - Mercedes as the winning constructor?

### Accurate SQL ###

SELECT COUNT(round) FROM table_1132600_3 WHERE pole_position = "Michael Schumacher" AND fastest_lap = "David Coulthard" AND winning_constructor = "McLaren - Mercedes"