Ch 45: Locking Mechanisms & Deadlocks

Comprehensive capstone module covering concurrency protocols, strict 2PL preventing cascading aborts, detecting deadlocks via Wait-for Graph cycles, and prevention via timestamp schemes (Wait-Die, Wound-Wait).

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CS403 - Database Management Systems Examination Practice

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🧠 Long Problem📘 CS403📑 Lec 45🏷️ 45.4. Deadlock Detection and Wait-for GraphHard🔁⭐💡📄🎓VU🏛️VU

Write four steps to recover from a deadlock between the transactions.

🧠 Long Problem📘 CS403📑 Lec 45🏷️ 45.4. Deadlock Detection and Wait-for GraphHard🔁⭐💡🌟📄🎓VU🏛️VU

During concurrent database transaction management, write down the four fundamental steps required to perform deadlock resolution in a database management system.

📝 Short Q📘 CS403📑 Lec 45🏷️ 45.1. Lock Types and ModesEasy🔁⭐💡📄🎓VU🏛️VU

Name and describe the two primary locking modes (or lock models) standardly managed by the lock manager in multi-user concurrent database transactions.

💻 sql Snippet

-- Transaction requests Shared Lock (S):
SELECT * FROM Student WITH (HOLDLOCK) WHERE stId = 'S1020';

-- Transaction requests Exclusive Lock (X):
UPDATE Student SET cgpa = 3.4 WHERE stId = 'S1020';

🧠 Long Problem📘 CS403📑 Lec 45🏷️ 45.4. Deadlock Detection and Wait-for GraphHard🔁⭐💡🌟📄🎓VU🏛️VU

During concurrent database transaction management, deadlocks represent an execution halt state. Write down the four fundamental steps required to perform deadlock resolution in a database management system.

💻 text Snippet

-- Deadlock dependency representation in Wait-for Graph (WFG):
-- Cycle: Transaction_A ---> Transaction_B ---> Transaction_A (Deadlock)

Ch 45: Locking Mechanisms & Deadlocks

CS403 - Database Management Systems Examination Practice

Mid Term Examination

Final Term Examination

CS403 - Database Management Systems Examination Practice

Mid Term Examination

Final Term Examination

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