Для чего служит FormCreate?

Вот часть кода:
procedure TForm1.FormCreate(Sender: TObject);

var s: string;

begin

s:=ExtractFilePath(Application.ExeName);

dbSource.ConnectionString:='Provider=Microsoft.Jet.OLEDB.4.0;Data
Source='+s+

'1.mdb;Persist
Security Info=False';

dbDest.ConnectionString:='Provider=Microsoft.Jet.OLEDB.4.0;Data
Source='+s+

'2.mdb;Persist
Security Info=False';

ci:=-1;

dbSource.Connected:=True;

dbDest.Connected:=True;

end;