I'm looking for tools that allow users with limited programming skills (like MBAs that know how to use Excel) to store, filter, and input structured data.

Like a fancy, user friendly and competent PHPMyAdmin or something. I have found https://www.zoho.com in my searches so for, but I'm looking for more alternatives. It would be cool if it had some kind of relationship or object structure.

So that I can create a user object, and then later on attach properties to that user object.