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  1. or download this
    package Hotels;

...

__PACKAGE__->has_a(hotel_id => Hotels);
__PACKAGE__->has_a(category_id => Categories);
  2. or download this
    $mycat = Categories->retrieve(3);

for ( $mycat->hotels(city => 'Timbucktoo') ) {
    # do something with hotels in Timbucktoo of category 3
}
  3. or download this
    Limiting

...
pairs for restricting the search. The above 
example will only return the CDs with a year 
of 1980.