EBK DATABASE SYSTEM CONCEPTS
7th Edition
ISBN: 9781260049268
Author: SILBERSCHATZ
Publisher: MCG COURSE
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Chapter 20, Problem 1PE
Explanation of Solution
Justification:
No,a multiuser system is not necessarily considered to be a parallel system.
Reason:
- A single processor with one core can be able to run multiple processes in order to manage multiple users.
- Most of the modern systems are now considered to be parallel.
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Students have asked these similar questions
Design a dynamic programming algorithm for the Longest Increasing Subsequence problem
described below:
Input: A sequence of n integers
Output: The length of the longest increasing subsequence among these integers.
The algorithm must take O(n²) time. You must also write and explain the recurrence.
Example 1:
Input: [5, 3, 6, 8, 4, 6, 2, 7, 9, 5]
Output: 5 ([3, 4, 6, 7, 9])
Example 2:
Input: [12, 42, 66, 73, 234, 7, 543, 16]
Output: 6 ([42, 66, 73, 234, 543])
Design a dynamic programming algorithm for the Subset Sum problem described below:
Input: A set of n integers A and an integer s
Output: A subset of A whose numbers add up to s, or that no such set exists.
The algorithm must take O(n·s) time. You must also write and explain the recurrence.
Example 1:
Input: A = {4, 7, 5, 2, 3}, s = 12
Output: {7,2,3}
Example 2:
Input: A{4, 7, 5,3}, s = 6
Output: 'no such subset'
TECNOLOGIE DEL WEB 2023/2023 (VER 1.1)
Prof. Alfonso Pierantonio
1. Project Requirements
The project consists in designing and implementing a Web application according to the
methodology and the technologies illustrated and developed during the course. This document
describe cross-cutting requirements the application must satisfy.
The application must be realized with a combination of the following technologies:
PHP
MySQL
HTML/CSS
JavaScript, jQuery, etc
templating
The requirements are
2. Project size
The application must have at least
18 SQL tables
The number of SQL tables refers to the overall number of tables (including relation normalizations).
3. Methodology
The application must be realized by adopting
separation of logics,
session management, and
generic user management (authentication/permissions).
Missing one of the above might correspond to a non sufficient score for the project. More in details:
3.1 Separation of Logics
The separation of logics has to be realizse by using…
Chapter 20 Solutions
EBK DATABASE SYSTEM CONCEPTS
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