Erik Meijer and Gavin Bierman - 2017 - A co-Relational Model of Data for Large Shared Data Banks
http://queue.acm.org/detail.cfm?id=1961297

rollback
https://www.vedu.ru/programming/index.asp?cont=articles&articles_id=511

2021
https://betterprogramming.pub/6-sql-queries-every-data-engineer-should-be-aware-of-2d0a2cc5986e
    https://nuancesprog.ru/p/14447/