Database System Concepts
7th Edition
ISBN: 9781260084504
Author: Abraham Silberschatz, S. Sudarshan, Abraham, Henry Korth, Silberschatz Abraham, Silberschatz Professor
Publisher: McGraw-Hill Education
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Chapter 23, Problem 6PE
Program Plan Intro
Data replication in a distributed system:
- In the distributed
database management, the main advantage is the availability of the system, so that the user who uses the data most, can avail it easily. - To make it possible, the distributed database system replicates the data in the database because in case one system fails, the data will available in another site.
Remote backup site:
- Remote backup site searches for the server 's content and takes backup of the data that could be used for future purposes in case of data failure or device crashes.
- Remote backup site avoids data loss by making a copy of data.
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Finally, your going to write several small javascript functions to practice with javascript core programming (basically just using javascript as a normal scripting language). For each section you can hardcode input values, and all output should go to console (we'll worry about the actual web page on Assignment 4). You can complete these all in one HTML file, or create one file for each part.
Write a C program to calculate the checksum for a given line of an IntelHex file.
To get full points, you must be able to explain to the instructor the individual parts of the IntelHex line (see below), as well as any part of your code.
Definition:The checksum is calculated as the two's complement of the sum of the individual bytes from the beginning of the line to the checksum.
Example:If you enter this string:
:10010000214601360121470136007EFE09D21901XX
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:100010000C9445000C9445000C9445000C944500xx:100020000C9445000C9445000C9445000C944500xx:100030000C9445000C9445000C9445000C944500xx:100040000C9445000C9445000C9445000C944500xx
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