Principles of Information Systems
13th Edition
ISBN: 9781337660556
Author: Ralph Stair; George Reynolds
Publisher: Cengage Learning US
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Chapter 4.3, Problem 2RQ
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Reasons for Walmart insisting on a “one size fits all” approach:
- To guarantee that every suppliers access the data in the same method and all information will be well-matched with each other...
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How to develop a C program that receives the message sent by the provided program and displays the name and email included in the message on the screen?Here is the code of the program that sends the message for reference:
typedef struct { long tipo; struct { char nome[50]; char email[40]; } dados;} MsgStruct;
int main() { int msg_id, status; msg_id = msgget(1000, 0600 | IPC_CREAT); exit_on_error(msg_id, "Creation/Connection"); MsgStruct msg; msg.tipo = 5; strcpy(msg.dados.nome, "Pedro Silva"); strcpy(msg.dados.email, "pedro@sapo.pt"); status = msgsnd(msg_id, &msg, sizeof(msg.dados), 0); exit_on_error(status, "Send"); printf("Message sent!\n");}
9. Let L₁=L(ab*aa), L₂=L(a*bba*). Find a regular expression for (L₁ UL2)*L2.
10. Show that the language
is not regular.
L= {a":n≥1}
11. Show a derivation tree for the string aabbbb with the grammar
S→ABλ,
A→aB,
B→Sb.
Give a verbal description of the language generated by this grammar.
14. Show that the language
L= {wna (w) < Nь (w) < Nc (w)}
is not context free.
Chapter 4 Solutions
Principles of Information Systems
Ch. 4.1 - Prob. 1RQCh. 4.1 - Prob. 2RQCh. 4.1 - Prob. 1CTQCh. 4.1 - Prob. 2CTQCh. 4.2 - Prob. 1RQCh. 4.2 - Prob. 2RQCh. 4.2 - Prob. 1CTQCh. 4.2 - Prob. 2CTQCh. 4.3 - Prob. 1RQCh. 4.3 - Prob. 2RQ
Ch. 4.3 - Prob. 1CTQCh. 4.3 - Prob. 2CTQCh. 4.4 - What is the primary difference between purchasing...Ch. 4.4 - What are the pros and cons of using open-source...Ch. 4.4 - What risks and start-up issues are associated with...Ch. 4.4 - Prob. 2CTQCh. 4 - Prob. 1SATCh. 4 - Prob. 2SATCh. 4 - Prob. 3SATCh. 4 - Prob. 4SATCh. 4 - Prob. 5SATCh. 4 - Prob. 6SATCh. 4 - Prob. 7SATCh. 4 - Prob. 8SATCh. 4 - Prob. 9SATCh. 4 - Prob. 10SATCh. 4 - ______ is software that makes its source code...Ch. 4 - Software ______ are an important source of...Ch. 4 - Identify and briefly discuss the three spheres of...Ch. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - What is the kernel of the operating system?Ch. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Distinguish between proprietary software and...Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - Prob. 1DQCh. 4 - Assume that you must take a computer-programming...Ch. 4 - Prob. 3DQCh. 4 - Prob. 4DQCh. 4 - Prob. 5DQCh. 4 - Prob. 6DQCh. 4 - Prob. 7DQCh. 4 - Prob. 8DQCh. 4 - Prob. 9DQCh. 4 - Prob. 10DQCh. 4 - Prob. 1PSECh. 4 - Prob. 2PSECh. 4 - Prob. 3PSECh. 4 - Prob. 1TACh. 4 - Prob. 1WECh. 4 - Do research on the Web to learn which programming...Ch. 4 - Prob. 3WECh. 4 - Prob. 1CECh. 4 - Prob. 2CECh. 4 - Think of your ideal job. Identify two existing...Ch. 4 - Prob. 1CTQ1Ch. 4 - Prob. 2CTQ1Ch. 4 - Prob. 3CTQ1Ch. 4 - Prob. 1CTQ2Ch. 4 - Prob. 2CTQ2Ch. 4 - Prob. 3CTQ2
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- 12. Eliminate useless productions from Sa aA BC, AaBλ, B→ Aa, C CCD, D→ ddd Cd. Also, eliminate all unit-productions from the grammar. 13. Construct an npda that accepts the language L = {a"b":n≥0,n‡m}.arrow_forwardYou are given a rope of length n meters and scissors that can cut the rope into any two pieces. For simplification, only consider cutting the rope at an integer position by the meter metric. Each cut has a cost associated with it, c(m), which is the cost of cutting the rope at position m. (You can call c(m) at any time to return the cost value.) The goal is to cut the rope into k smaller pieces, minimizing the total cost of cutting. B Provide the pseudo-code of your dynamic programming algorithm f(n,k) that will return the minimum cost of cutting the rope of length n into k pieces. Briefly explain your algorithm. What is the benefit of using dynamic programming for this problem? What are the key principles of dynamic programming used in your algorithm?arrow_forwardDetermine whether each of the problems below is NP-Complete or P A. 3-SAT B. Traveling Salesman Problem C. Minimum Spanning Tree D. Checking if a positive integer is prime or not. E. Given a set of linear inequalities with integer variables, finding a set of values for the variables that satisfies all inequalities and maximizes or minimizes a given linear objective function.arrow_forward
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