[Bioperl-l] BerkeleyDB

[shalu sharma]

Hey everyone,
     So I am using this BerkeleyDB to make a huge database (tree method).
I use it to pull out matching ids (its working fine) from multiple datasets.
 here are few lines of the code:

use strict ;

use BerkeleyDB ;

use Bio::SeqIO;

my $filename = "tree" ;

unlink $filename ;

my %h ;

tie %h, 'BerkeleyDB::Btree',

                -Filename   => $filename,

                -Flags      => DB_CREATE,

    or die "Cannot open $filename: $!\n" ;


 # Add a key/value pair to the file

open(IN,"$ARGV[0]");                    # adding values

while(<IN>){

     my $line = $_;

     chomp($line);

     my @f = split('\t',$line);

     my $id = $f[0];my $val = $f[1];$id =~ s/^\s+//;$id =~ s/\s+$//;

     $val =~ s/^\s+//;$val =~ s/\s+$//;

     $h{$id} = $val;
----
----
My question is that: It makes a huge tree file. Is it possible to re-use
that tree file again instead of making it again and again. My query
datasets changes but not that database.
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