Subject notes, important questions and revision material for computer science courses and exams.
Exam-focused DBMS revision notes covering keys, the ER model, relational algebra, SQL, normalization up to BCNF with one worked example, transactions, concurrency control and indexing, ending with a last-minute checklist.
GuideWebAll levels
Important operating systems questions with concise answers, grouped by unit: processes and threads, CPU scheduling, synchronization, deadlocks, memory management and file systems, with solved scheduling, Banker's algorithm, page replacement and disk scheduling problems.
Practice sheetWebAll levels