Another excellent DB textbook covering both theory and implementation is Weikum & Vossen: https://www.google.com/books/edition/_/wV5Ran71zNoC?hl=en&gbpv=1&pg=P

Another excellent DB textbook covering both theory and implementation is Weikum & Vossen: https://www.google.com/books/edition/_/wV5Ran71zNoC?hl=en&gbpv=1&pg=PP1&dq=Weikum+%26+Vossen https://www.google.com/books/edition/_/wV5Ran71zNoC?hl=en&gb... In case you can't afford to donate $150 to Elsevier: https://www.dropbox.com/scl/fi/r0fros5y2kzeqv57v7myz/Transactional-Information-Systems-Theory-Algorithms-and-the-Practice-of-Concurrency-Control.pdf?rlkey=f28gwoeh1kc1w41fk59xc6swu&dl=0 https://www.dropbox.com/scl/fi/r0fros5y2kzeqv57v7myz/Transac...