From a high-level perspective, what are the different methods that one can get data out of a MediaWiki wiki?

<ul>
<li>download an <A href="http://download.wikimedia.org/backup-index.html">offline database dump</a> (if the wiki provides it)
<li>directly access a <a href="http://meta.wikimedia.org/wiki/Toolserver">live mirror of the database</a>  (if the wiki provides it)
<li>methods that use the <b>same</b> HTTP server that normal users use
    <ul>
    <li><a href="http://en.wikipedia.org/wiki/Screen_scraping">screen scrape</a> the HTML
    <li>use <a href="http://www.mediawiki.org/wiki/Extension:BotQuery">query.php</a>, if that extension has been installed
    <li>use <a href="http://www.mediawiki.org/wiki/Special:PrefixIndex/API">api.php</a>, a newer version of query.php  (not sure when it was included in MediaWiki, but v1.11.1 is the easliest I've seen it)
    <li><A href="http://www.mediawiki.org/wiki/Manual:Parameters_to_Special:Export">Special:Export</a>
        <ul>
        <li><a href="http://www.conservapedia.com/Special:Export//">easiest way to get the namespaces</a>
        </ul>
    <li><tt><a href="http://www.mediawiki.org/wiki/Manual:Parameters_to_index.php#Raw">action=raw</a></tt> (<a href="http://en.wikipedia.org/w/index.php?title=Main_Page&action=raw&ctype=text/css">example</a>)
    <li><tt><a href="http://www.mediawiki.org/wiki/Manual:Parameters_to_index.php#Actions">action=render</a></tt> (displays HTML of the article only, without any wrappings)
    </ul>
</ul>


<h3>Other database-related things</h3>
<ul>
<li><a href="http://www.mediawiki.org/wiki/Manual:Parameters_to_index.php#Identifying_a_page_or_revision">curid=###</a> &mdash; specify the pageid, direct from the database
                (<a href="http://en.wikipedia.org/wiki/index.php?curid=2512">[eg]</a>, note that wgArticleId=2512)
<li>if you "view source" on any page, you'll see quite a few javascript variables
</ul>