How are you storing the information to begin with? Do you mean you're using the Storable module to serialize the information first? If so, then I can't see why (or how) you'd then insert that into a DB_File. If on the other hand you're merely inserting a normal hash into a DB_File, then (from the documentation), use tie to load the data into a hash and merely foreach as normal over the keys:

tie %hash,  'DB_File', [$filename, $flags, $mode, $DB_HASH];
foreach (keys %hash) { ... }
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Alternatively, after tie'ing the hash, you can use:

$hash->get($key, $value [, $flags]);
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Alternatively, after tie'ing the hash, you can use:

$hash->get($key, $value [, $flags]);
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But only if you define $hash ;)

my $hash = tie %hash,  'DB_File', [$filename, $flags, $mode, $DB_HASH]
+;

$hash = tied %hash;
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If you do use $hash, you must be sure to undef it before you untie %hash, see the untie gotcha part of the DB_File documentation.

____________________________________________________
** The Third rule of perl club is a statement of fact: pod is sexy.

Basically i want to store
a hash directly in to an MLDBM
I thgt using Storable will be faster
But it is as the same speed as Data::Dumper
hence if u can suggest something
Thanks