1) Fusion Tables will work for at least a year ... until
December 20192) Fusion Tables is about the only FREE sql database that users can use without establishing your own server
3) If you google sql database free you should find several databases that can be used on line, unfortunately most if not all require you provide your own server.
4) The Google announcement does provide information explaining how you can download your information from a FusionTable to your Pc to transfer the data to another option.
Now your question..
sql, Free or almost free and do not require own server
* .sql and entirely Free and does not require using your own server: It looks like none.
There is also a tutorial on Hosein's AppyBuilder block that looks pretty good
https://amerkashi.
wordpress.com/2018/09/22/airtable-spreadsheet-or-database/ . Unfortunately it uses a component that is only on Appybuilder.--not AI2.
* sql and Free for a year and might not require own server...
Amazon RDS might work
non sql and Free not requiring your own server
* Amazon DynamoDB non sql and Free possibly until they withdraw that offer and might not require own server
* FirebaseDB (using FirebaseDB control) ... use the default settings for non commercial or small DB; use your own Firebase for other stuff
* CloudDB (using CloudDB control) ... use default settings for non commercial (this uses MIT's server which frequently gets overloaded and is currently glitchy but user can set up his/her own Redis server for large and commercial projects
* Google Sheets can be used as a database ... Forum discussions explain how.
There are probably more options where you use your own server
There are options for which you have to pay.
I imagine others have other ideas. MIT has said they will examine possible options for a database knowing they already provide experimental controls for Firebase and their CloudDB.
Users have over a year to transition. Google is very clear; you will have to transition by December 2019. The world changes. Google has several commercial, pay for use possibilities they probably would like most commercial developers to transition to. There is no free lunch with respect to sql databases.
Regards,
Steve