EBK DATABASE SYSTEM CONCEPTS
7th Edition
ISBN: 9781260049268
Author: SILBERSCHATZ
Publisher: MCG COURSE
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Chapter 19, Problem 2PE
Explanation of Solution
Purpose of checkpoint
- Checkpoint is usually performed in conjunction with the log-based recovery system when a system crash occurs.
- In transactions which used checkpoints, all the modified buffer blocks till the checkpoint are written to the disk.
- Checkpoints reduce the recovery time of a system after a crash.
- When checkpointing is performed and a system crashes, then the modified buffer blocks till the checkpoint have been written to the disk...
Explanation of Solution
Performing checkpoints:
The frequency of performing checkpoints depends upon the requirements and resources of the system.
- The frequency of checkpoints is reduced when fast recovery is not critical to the system since the...
Explanation of Solution
Affecting the frequency of checkpoints:
- The frequency of checkpoints must be also as less as checkpoints when no failure occurs in a system since it causes some performance loss while they are being taken...
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I need help to resolve the case, thank you
In 32-bit MSAM, You were given the following negative array. write a program that converts each array element to its positive representation. Then add all these array elements and assign them to the dl register. .data myarr sbyte -5, -6, -7, -4.code ; Write the rest of the program and paste the fully working code in the space below.
the dl register should have the value 22 after summing up all elements in the array.
Microprocessor 8085 Lab Experiment
Experiment No. 3 Logical Instructions
Write programs with effects
1. B=(2Dh XOR D/2) - (E AND 2Eh+1) when E=53, D=1Dh
2. HL= (BC+HL) XOR DE (use register pair when necessary), when BC=247,
HL 516, DE 12Ach
3. Reset bits 1,4,6 of A and set bits 3,5 when A=03BH
Write all as table (address line.hexacode,opcede,operant.comment with flags)
Chapter 19 Solutions
EBK DATABASE SYSTEM CONCEPTS
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