AGH-db-lectures/13-relational-algebra, branch magister Lecture materials for databases course at AGH https://git.koszko.org/AGH-db-lectures/atom?h=magister 2026-01-27T11:00:01Z Corrections to `13-relational-algebra'. 2026-01-27T11:00:01Z W. Kosior koszko@koszko.org 2026-01-27T11:00:01Z urn:sha1:b16d1656645483dc8a981bf66f5f5c5f3ffc3eaf Add `13-relational-algebra'. 2025-12-23T11:00:01Z W. Kosior koszko@koszko.org 2025-12-23T11:00:01Z urn:sha1:dd2c9e4aeb77da8f2b5ccd292a637bfec4d068c3