Jonathan Diehl has submitted a new tutorial today about the creation (and demonstration) of an Ajax ActiveTable with a little help from the Sajax library.
The functionality allows the user to both create and remove rows of data from the database directly with a few simple calls back to a server-side handler to do the work. It can also dynamically create a table for the MySQL data it's looking at to make setup even easier.
The best part? The code for the project is ready for download to be used right away.