app so site visitors can query database for sorted results?

I currently have prehistoric-style HTML tables of names and numbers. I would like to enter the contents into a simple database, so that site visitors (with no special permissions) can enter a set of values and it will return the named items that most closely match the query.

I know I can hire a programmer to create this from scratch–but is there a plugin for WP that does something like what I’m describing? Thanks!