Turns just about anythig into an SQL database.

 https://steampipe.io/

run SQL over about 200 data sources. 

Power any project with a modern, open source data platform

 https://directus.io/

SaaS layer to take a relational database and present it as an API

Open source no-code database and Airtable alternative

https://baserow.io/ 

We'll see how mature it is. 

SQLite is not a toy database

 https://antonz.org/sqlite-is-not-a-toy-database/

I've seen for several years that SQLite is the new database of choice for CMSs. MySQL is proving too heavy for them. 

Costly Mistakes: Why We Had to Abandon Firebase

 https://js.plainenglish.io/costly-mistakes-why-we-had-to-abandoned-firebase-b89930c10d92

Dare I say? They got burned by firebase.

Things I Wished More Developers Knew About Databases

 https://rakyll.medium.com/things-i-wished-more-developers-knew-about-databases-2d0178464f78

Some rather subtle points here

He tried to prank the DMV. Then his vanity license plate backfired big time.

https://mashable.com/article/dmv-vanity-license-plate-def-con-backfire/
I've often thought of doing this. Glad now I didn't.

Space Cloud β : Instant Realtime APIs on Any Database

https://spaceuptech.com/
Interesting opensource project to give access to databases via APIs

Which AWS Technology Should You Use for Your Open Source Database?

https://thenewstack.io/which-aws-technology-should-you-use-for-your-open-source-database/
pros and cons of various AWS database services

SeekTable online pivot tables, pivot charts and datagrid reports

https://www.seektable.com/
Online datagrid and charting tool

SeekTable online pivot tables, pivot charts and datagrid reports

https://www.seektable.com/
Interesting online table and chart tool.

Jupyter Magics with SQL

https://towardsdatascience.com/jupyter-magics-with-sql-921370099589
Cool intro to using SQL magics in Jupyter notebook. 

Python HOW: Connect to, and Manage a Database

https://medium.com/@DrGabrielA81/python-how-connect-to-and-manage-a-database-68b113a5ca62
Intro to database manipulation via the python odbc library.

Microservices, events, and upside-down databases

https://www.oreilly.com/ideas/microservices-events-and-upside-down-databases
How unraveling a traditional database into its associated parts can yield greater insights.

PDO vs. MySQLi: The Battle of PHP Database APIs

https://websitebeaver.com/php-pdo-vs-mysqli
PDO and MySQLi in PHP. This author says go with PDO.

What I’m Telling Business People About Why Relational Databases Are So Bad

https://codeburst.io/what-im-telling-business-people-about-why-relational-databases-are-so-bad-6f38d3d6c995
Truth-teller about the ugly of relational databases.

FoundationDB gives you the power of ACID transactions in a distributed database.

https://www.foundationdb.org/
OpenSource distributed database. We'll see if it has legs.

UUID or GUID as Primary Keys? Be Careful!

https://tomharrisonjr.com/uuid-or-guid-as-primary-keys-be-careful-7b2aa3dcb439
Good case for UUID vs. surrogate integer IDs in database design.

adminer database management in a single file

https://www.adminer.org/
I've thought for a long time that PhpMyAdmin was getting old. Here's an alternative.

What I learnt from building 3 high traffic web applications on an embedded key value store.

https://medium.com/@tonyalaribe/what-i-learnt-from-building-3-high-traffic-web-applications-on-an-embedded-key-value-store-68d47249774f
NoSQL or Key-Value stores are good as long as you can search them.