Database systems are often composed of processes (also known as threads) that communicate through shared memory resources. What constraints, if any, are imposed on access to the shared memory space?...

Extracted text: Database systems are often composed of processes (also known as threads) that communicate through shared memory resources. What constraints, if any, are imposed on access to the shared memory space? Is two-phase locking the best approach for serializing access to shared memory data structures? Your response should be logical.