Getting data from a site, what method is more efficient ?
Using Rss feed
or
Sql query
Getting data from another site? RSS feed. Either way most likely an sql query will be used. (the display, or to generate the RSS feed)
From your site? I'd say SQL
the rss feed has to get the data from the db anyway, so either way an SQL query will be used
If it's from your own site, an SQL query will perform much quicker than the HTTP request made to an RSS feed, then the following parsing done.
Request -> RSS - > SQL
vs
Request -> SQL