simple web-based database system

Hello,

we are a team of three. And we have a simple relational database structure. This means we have 7 tables which are connected to each other. There are only 1: in relations.

We are now searching for a solution so that we can create a database with all 7 tables so that we can add data and retrieve data (perform queries) together.

Unfortunately, we dont have much knowledge on programming but we would be happy to learn.

It would be great if you could recommend as a system which is not expensive and which would allow us to set up a first simply usable cloud-based database.

Thanks