You mentioned yourself that you want to be able to search text. Matching that text against the database, you want to find where that file is on disk.

Imagine the following example; You have these words to lyrics in your mind.. you remember some part of the song goes .. "and the piano has been drinking not me". So you go to google and do an exact search for that string.

So, by your example, loosely applied:

#!/usr/bin/perl -w
use strict;

my $song = "The piano has been drinking
My necktie's asleep
The combo went back to New York, and left me all alone
The jukebox has to take a leak
Have you noticed that the carpet needs a haircut?
And the spotlight looks just like a prison break
And the telephone's out of cigarettes
As usual the balcony's on the make
And the piano has been drinking, heavily
The piano has been drinking
And he's on the hard stuff tonight

The piano has been drinking
And you can't find your waitress
Even with the Geiger counter
And I guarantee you that she will hate you
From the bottom of her glass
And all of your friends remind you
That you just can't get served without her
The piano has been drinking

The piano has been drinking
And the lightman's blind in one eye
And he can't see out of the other
And the piano-tuner's got a hearing aid
And he showed up with his mother
And the piano has been drinking
Without fear of contradiction I say
The piano has been drinking

Our Father who art in ?
Hallowed by thy glass
Thy kindom come, thy will be done
On Earth as it is in the lounges
Give us this day our daily splash
Forgive us our hangovers
As we forgive all those who continue to hangover against us
And lead us not into temptation
But deliver from evil and someone you must all ride home

Because the piano has been drinking
And he's your friend not mine
Because the piano has been drinking
And he's not my responsibility

The bouncer is this Sumo wrestler
Kinda cream puff casper milk toast
And the owner is just a mental midget
With the I.Q. of a fencepost
I'm going down, hang onto me, I'm going down
Watch me skate across an acre of linoleum
I know I can do it, I'm in total control
And the piano has been drinking
And he's embarassing me
The piano has been drinking, he raided his mini bar

The piano has been drinking
And the bar stools are all on fire
And all the newspapers were just fooling
And the ash-trays have retired
And I've got a feeling that the piano has been drinking
It's just a hunch
The piano has been drinking and he's going to lose his lunch
And the piano has been drinking
Not me, not me, The piano has been drinking not me";


my $word={};
my $words=[];

while( $song=~/[\W]*(\w+)[\W]*/g ){

   unless(exists $word->{$1}){
      push @$words, $1;
   }
   
   $word->{$1}++;   

}

my $summary =  join(' ', @$words);

printf "original charcount: %s
new charcount: %s\n
words selected: 
%s\n\n", length $song, length $summary, $summary;
[download]

Even before we take out stop words, etc, we get:

original charcount: 2129
new charcount: 1126

words selected:
The piano has been drinking My necktie s asleep combo
 went back to New York and left me all alone jukebox
 take a leak Have you noticed that the carpet needs 
haircut And spotlight looks just like prison break 
telephone out of cigarettes As usual balcony on make
heavily he hard stuff tonight can t find your waitress
 Even with Geiger counter I guarantee she will hate
 From bottom her glass friends remind That get served
 without lightman blind in one eye see other tuner 
got hearing aid showed up his mother Without fear 
contradiction say Our Father who art Hallowed by thy 
Thy kindom come be done On Earth as it is lounges 
Give us this day our daily splash Forgive hangovers
 we forgive those continue hangover against lead 
not into temptation But deliver from evil someone 
must ride home Because friend mine my responsibility 
bouncer Sumo wrestler Kinda cream puff casper milk
 toast owner mental midget With Q fencepost m going
 down hang onto Watch skate across an acre linoleum 
know do total control embarassing raided mini bar 
stools are fire newspapers were fooling ash trays 
have retired ve feeling It hunch lose lunch Not

So, as a human being, searching for this song against your database, I would not be able to find it quite so easily.

What will be interacting with your data? A human being or a computer? I'm not trying to be a smart ass. But if you want a human being to use search for things against your database, the you are wrong; pages and pages of text is what you want- and all you did in your example was to turn 460 characters with spaces into 155 characters of junk.