DabbleDB – online database tool

DabbleDB is a free online database tool that allows you to easily create a simple relational database and share it with others on the web.  If you wish to share the data publicly, an account is free; a subscription fee is required for sharing and collaborating on private databases in small groups.

The site also includes a seven minute video showing features of the software:
https://www.dabbledb.com/explore/7minutedemo/