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Bess [88]
3 years ago
10

Using the notation exemplified in following question , list a set of tables and attributes (and identify keys) to represent the

following data:
In a very simple school database, students have a student ID and a name. Each student has only one advisor (who has an ID and a name). Each advisor advises many students. Students take many courses. Each course has an ID, a name, and the number of credits. The database also stores when a student took a course (the semester/year) and his/her final grade for that course (on that semester).

Computers and Technology
1 answer:
Paha777 [63]3 years ago
6 0

Answer:

Entities are - Students, CourseList, Advisor and CourseSelection.

Explanation:

The database is structure is designed using Crow Foot Database Notation as attached

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We have written a method called sum with an int[] parameter nums. We want our sum method to compute the sum of nums, but our cod
ira [324]

Answer:

Following are the code to this question:

public class Main//defining a class-main  

{

public static int sum(int[] nums)//defining a method sum that accepts array  

{

int total = 0;//defining integer variable total

for(int num : nums) // use for-each loop

{  

total += num;//add array value in total variable

}

return total;//use return keyword to return the total value

}

public static void main(String []ar )//defining a main method  

{

int[] nums={1,2,3,4,5};//defining 1-D array nums

System.out.println(sum(nums));//use print function to call sum method  

}

}

Output:

15

Explanation:

In the class "Main", a static method, "sum" is defined, that accepts array in its parameter and inside the method, an integer variable "total" is define, that uses the for each loop to add array value in a total variable and use a return keyword to return its value.  

Inside the main method, an integer array nums are defined, that holds store some values and use the print function to call the sum method.

8 0
3 years ago
Using the drop-down menus, correctly match the name of the person with the computer-programming
Sauron [17]

Answer:

1. Bill Gates and Paul Allen

2. Grace Murray Hopper

3. John Backus

4. Bjarne Stroustrup

5. Guido van Rossum

5 0
4 years ago
When a bank account pays compound interest, it pays interest not only on the principal amount that was deposited into the accoun
Talja [164]

Answer:

def main():

   principal = float(input("Enter the amount of principal amount to be deposited: "))

   rate = float(input("Enter annual interest rate paid by the account: "))

   num = int(input("Enter the number of times per year that the interest is compunded: "))

   years = float(input("Enter the number of years the account will be left to earn interest: "))

   amount = principal*(1+(rate*.01)/num)**(num*years)  

   print("The amount of money will be in the account after ", years, "years:", round(amount,2))

main()        

Explanation:

  • Calculating the balance of the account after a specified number of years  with the help of the formula:
  • amount = principal*(1+(rate*.01)/num)**(num*years)  
8 0
3 years ago
Information systems that support the sales process of B2C companies are typically Web storefronts that customers use to enter an
RoseWind [281]

Answer:

This statement is CORRECT in electronic commerce and Online stores

Explanation:

The term B2C is derived from e-commerce which means Business to Consumer which describes  the process of selling goods and services directly to consumers who are the end-users. The advent of the dot com web boom led to a huge increase in these kinds of companies that sell directly to consumers through their online (website) channels.

3 0
3 years ago
Alison is having a hard time at work because her Inbox is flooded with emails every day. Some of these emails are unsolicited. S
miskamm [114]

Personally I just leave them in my inbox because who cares, Alison should; however, move them to the trash I guess

7 0
3 years ago
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