ORMHate

https://martinfowler.com/bliki/OrmHate.html

Long post about ORM which give u more detail about object/memory-mapping/relational, problems with ORM and how to deal with it. No 100% solution to this...
http://blogs.tedneward.com/post/the-vietnam-of-computer-science/

https://martinfowler.com/eaaCatalog/

Alternative to RDMS
https://martinfowler.com/bliki/DatabaseThaw.html

https://martinfowler.com/bliki/PolyglotPersistence.html

https://martinfowler.com/tags/database.html

https://www.infoq.com/jaoo