I so far run a single site with WordPress. I am now about to start adding multiple new WP-driven sites using addon domains within my hosting account. I hadn't anticipated that when I installed my first WP-driven site, and I gave that first MySQL database a name that I'd now prefer to change. If I can't change it, I'll live. But if it's possible to change it while preserving all functionality in that WP installation, I'd like to. Is it possible? If so, how?