I am a big fan of MLDBM for simple databases. I am not familiar with DBM::Deep; I'll have to give it a look. However, I prefer a relational database, once the data design gets very complicated. There's lots of functionallity in relational databases that can be leveraged against. (Aside: any English whizzes like to correct or corroborate my use of "leveraged" there?)

If your $db is a HoH type structure then it is easy to pull certain records from it with a little Perl:

  # store some stuff in the "database":
  $db->{ record_1 } = {
    greeting => 'hello',
    perl     => 'rules',
    etc      => [ 42, 99 ]
  };

  $db->{ some_other_record } = {
    greeting => 'Oi, gente',
    perl     => 'r0x0rs',
    etc      => [ 38, 45 ]
  };
  # and so on

  # now find keys of all records that "rules"
  my @keys_of_records_that_rule = grep {
    $db->{ $_ }{ perl } eq 'rules'
  } keys %$db;

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-Colin.

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In reply to Re: Wisdom of data in hashes vs. SQL by cmeyer
in thread Wisdom of data in hashes vs. SQL by punkish

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