my %HoA=(
         1=>["ab",20090101,91010],
         2=>["cd",20090101,91010],
         3=>["ef",20090201,101000],
      ......
         );

##</code><code>##

my %HoA = ( 1, [...], 2, [...], 3, [...], ... );

##</code><code>##

my %HoA = ( {...}, undef );