The Pro version of WP Migrate DB plugin allows you to copy your db from one WP install to another with a single-click in your dashboard.
I’ve already written about how you can use the free version to change url’s in your database when migrating to a new domain, server or directory.
In my opinion, this plugin provides the best free solution when migrating WordPress and is a serious alternative to popular premium backup and migration plugins like BackupBuddy.
Video – Pulling Live Data Into Your Local Development Environment