[Zope] Searching: Zcatalog, what else?

Hi all, re. search engines in zope: I know there's Zcatalog, but I'm curious what my other options are for implementing searches. Simply finding a string in the body of a document would be great. For example, How would you do text search if your data is in an SQL database? Maintain a separate text index and update it every so often? You can tell I'm no dba. :) -- Paul Winkler home: http://www.slinkp.com "Muppet Labs, where the future is made - today!"