Analyze the illustrations below. Then, answer the following items. Search for related literature and/or relative studies that would support your answers. Cite your references accordingly. Progress of Q Release A P and Q want A A Required Release B Get A 3 Deadlock inevitable В P and Q Required want B 5 Get B 4 6. Get A Progress of P Get B Release A Release B 2 = Both P and Q want resource A A = Both P and Q want resource B Required B Required = Deadlock-inevitable region Possible progress path of P and Q. Horizontal portion of path indicates P is executing and Q is waiting. Vertical portion of path indicates Q is executing and P is waiting. 1. Describe the deadlock scenario illustrated above based on your understanding. 2. What do you think would happen if both Process P and Q need to get the same resource? 3. Which concurrency mechanism would you suggest that might prevent the deadlock situation above? Rationalize your answer. 4. Define in detail the Execution Paths 2 to 6. Example: Execution Path 1- Process Q acquires Resource B and then Resource A. Process Q then releases Resource B and A, respectively. 5. Do Execution Paths 3 and 4 encompass the first three conditions for a deadlock to occur? Explain vour

Analyze the illustrations below. Then, answer the following items. Search for related literature and/or relative studies that would support your answers. Cite your references accordingly. Progress of Q Release A P and Q want A A Required Release B Get A 3 Deadlock inevitable В P and Q Required want B 5 Get B 4 6. Get A Progress of P Get B Release A Release B 2 = Both P and Q want resource A A = Both P and Q want resource B Required B Required = Deadlock-inevitable region Possible progress path of P and Q. Horizontal portion of path indicates P is executing and Q is waiting. Vertical portion of path indicates Q is executing and P is waiting. 1. Describe the deadlock scenario illustrated above based on your understanding. 2. What do you think would happen if both Process P and Q need to get the same resource? 3. Which concurrency mechanism would you suggest that might prevent the deadlock situation above? Rationalize your answer. 4. Define in detail the Execution Paths 2 to 6. Example: Execution Path 1- Process Q acquires Resource B and then Resource A. Process Q then releases Resource B and A, respectively. 5. Do Execution Paths 3 and 4 encompass the first three conditions for a deadlock to occur? Explain vour

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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