https://www.g2.com/products/ittia-db-sql-embedded-database/competitors/alternatives
https://www.trustradius.com/embedded-database
https://stackoverflow.com/questions/2011724/whats-the-best-database-for-embedded
https://objectbox.io/sqlite-alternatives/
https://en.wikipedia.org/wiki/Embedded_database
https://greenrobot.org/news/mobile-databases-sqlite-alternatives-and-nosql-for-android-and-ios/
database types NoSQL Relational Distributed Object-oriented Graph Key-value Trees
https://dataintensive.net/
https://dbfromzero.com/log_structured_merge_tree.html
https://hbase.apache.org/book.html#arch.overview
https://blog.bytebytego.com/p/ep58-10-key-data-structures-we-use
https://blog.bytebytego.com/p/8-data-structures-that-power-your
database types Data Structure hash R-TREEs
LIST R-TREEs SSTable LSM tree Suffix tree Log-Structured Merge tree