There are plenty of apps that are pretty close to what you're describing, basically MS Access for the web. They're usually called “app builders”. Knack, Zoho Creator, etc.

The real problem is that this way of creating 1.0 gives you no path to get to 2.0. Dietzler’s Law for Access:

“Every Access project will eventually fail because, while 80% of what the user wants is fast and easy to create, and the next 10% is possible with difficulty, ultimately the last 10% is impossible because you can’t get far enough underneath the built-in abstractions, and users always want 100% of what they want.”

From: http://nealford.com/memeagora/2013/01/22/why_everyone_eventu...