Remove blank page from database?

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So i’m doing work for a client…what happened was that a picture was deleted on a page (linked to a php template), and he doesn’t know how to replace it. So since the page itself is of course blank, I go to the PHP template, and find the code for the page, which is:

<span>
<?php the_title(); ?><br />
<?php $custom_fields = get_post_custom(); ?>
<?php echo $custom_fields['person_designation'][0]; ?><br />
<a href="mailto:<?php echo $custom_fields['person_email'][0]; ?>"><?php echo $custom_fields['person_email'][0]; ?></a><br />
<?php echo $custom_fields['person_telephone'][0]; ?><br /><br />

So i’m guessing that the actual thing that tells what image file, name, email of the person to put on the server is in a database…now the question, how do I access the database?