(https://cs-people.bu.edu/mathan/publications/fnt23-athanassoulis.pdf?utm_source=hackernewsletter&utm_medium=email&utm_term=books)[https://cs-people.bu.edu/mathan/publications/fnt23-athanassoulis.pdf?utm_source=hackernewsletter&utm_medium=email&utm_term=books] (https://www.postgresql.org/docs/current/query-path.html)[https://www.postgresql.org/docs/current/query-path.html] (https://ocw.mit.edu/courses/6-830-database-systems-fall-2010/)[https://ocw.mit.edu/courses/6-830-database-systems-fall-2010/] (https://blog.marcua.net/2009/06/03/mit-database-systems-6830-ta-course-notes.html)[https://blog.marcua.net/2009/06/03/mit-database-systems-6830-ta-course-notes.html]