Chapter 11, Problem 10.1SRE

Consider the following program that counts the number of spaces in a user-supplied string. Modify the program to define and use a function, countSpaces, instead. def main() :   userInput = input("Enter a string: ")   spaces = 0   for char in userInput :      if char == " " :         spaces = spaces + 1   print(spaces)   main()

What is the python code for the  function def readFloat(prompt) that displays the prompt string, followed by a space, reads a floating-point number in, and returns it. Here is a typical usage:                    salary = readFloat("Please enter your salary:")                    percentageRaise = readFloat("What percentage raise would you like?")

assume python does not define count method that can be applied to a string to determine the number of occurances of a character within a string. Implement the function numChars that takes a string and a character as arguments and determined and returns how many occurances of the given character occur withing the given string

Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, a) Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key. b) Mention the relationship between the Order and Customer Entities. You can use the following: 1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M c) Is there a direct relationship that exists between Store and Customer entities? Answer Yes/No? d) Which of the 4 Entities mention in the diagram can have a recursive relationship? e) If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type?

No ai

Given the dependency diagram of attributes {C1,C2,C3,C4,C5) in a table shown in the following figure, (the primary key attributes are underlined)

What are 3 design techniques that enable data representations to be effective and engaging? What are some usability considerations when designing data representations? Provide examples or use cases from your professional experience.

2D array, Passing Arrays to Methods, Returning an Array from a Method (Ch8) 2. Read-And-Analyze: Given the code below, answer the following questions. 2 1 import java.util.Scanner; 3 public class Array2DPractice { 4 5 6 7 8 9 10 11 12 13 14 15 16 public static void main(String args[]) { 17 } 18 // Get an array from the user int[][] m = getArray(); // Display array elements System.out.println("You provided the following array "+ java.util.Arrays.deepToString(m)); // Display array characteristics int[] r = findCharacteristics(m); System.out.println("The minimum value is: " + r[0]); System.out.println("The maximum value is: " + r[1]); System.out.println("The average is: " + r[2] * 1.0/(m.length * m[0].length)); 19 // Create an array from user input public static int[][] getArray() { 20 21 PASSTR2222322222222222 222323 F F F F 44 // Create a Scanner to read user input Scanner input = new Scanner(System.in); // Ask user to input a number, and grab that number with the Scanner…

Given the dependency diagram of attributes C1,C2,C3,C4,C5 in a table shown in the following figure, the primary key attributes are underlined   Make a database with multiple tables from attributes as shown above that are in 3NF, showing PK, non-key attributes, and FK for each table? Assume the tables are already in 1NF. Hint: 3 tables will result after deducing 1NF -> 2NF -> 3NF