Cardinality ratios often dictate the detailed design of a database. The cardinality ratio depends on the real-world meaning of the entity types involved and is defined by the specific application. For the binary relationships below, suggest cardinality ratios based on the common-sense meaning of the entity types. Clearly state any assumptions you make.
Entity 1 Cardinality Ratio Entity 2
1. Student SocialSecurityCard
2. Student Teacher
3. ClassRoom Wall
4. Country CurrentPresident
5. Course TextBook
6. Item (that can
be found in an
order) Order
7. Student Class
8. Class Instructor
9. Instructor Office
10. E-bay Auction item E-bay bid

Answers

Answer 1

Solution :

ENTITY 1               CARDINALITY RATIO                                     ENTITY 2

1. Student                        1 to many                                     Social security card

                      A student may have more than one          

                     social security card (legally with the

                      same unique social security number),

                     and every social security number belongs

                   to a unique.

2. Student                   Many to Many                                    Teacher

                    Generally students are taught by many

                    teachers and a teacher teaches many students.

3.ClassRoom               Many to Many                                   Wall

                      Do not forget that the wall is usually

                      shared by adjacent rooms.

4. Country                 1 to 1                                             Current President

                       Assuming a normal country under normal

                       circumstances having one president at a

                      time.

5. Course               Many to Many                               TextBook

                        A course may have many textbooks and

                       text book may be prescribed for different

                      courses.

6. Item                             Many to Many                           Order

                        Assuming the same item can appear

                         in different orders.

7. Student                       Many to Many                          Class

                        One student may take several classes.

                        Every class usually has several students.

8. Class                                 Many to 1                             Instructor

                       Assuming that every class has a unique

                        instructor. In case instructors were allowed

                        to team teach, this will be many-many.

9. Instructor                  1 to 1                                             Office

                       Assuming every instructor has only one

                      office and it is not shared. In case of offices

                     shared by 2 instructors, the relationship

                    will be 2-1. Conversely, if any instructor has a joint

                    appointment and offices in both departments,

                    then the relationship will be 1-2. In a very general

                  case, it may be many-many.

10. E-bay Auction item             1-Many                           E-bay bid

                        1 item has many bids and a bid is unique

                        to an item.


Related Questions

Write the following numbers in binary. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 46. 55. 61.​

Answers

0 1 10 11
Explanaition:

_________ are standard devices, such as switches and routers, that have small onboard computers to monitor traffic flows through the device as well as the status of the device and other devices connected to it

Answers

Answer:

Managed devices

Explanation:

hope it helps u

We canconnect  two or more computer together using cables true or false​

Answers

This is true for most modern computers

Instructions
Create a multimedia project that contains the text element and all the contents that you have studied about that element

Answers

Answer:

iiiio888887776558777u765

Which of the following is not a computer application?

a. Internet Explorer

b. Paint

c. Apple OSX

d. Microsoft Word

Answers

Answer:C.apple Osx
Answer C

Apple OSX is not a computer application.

The information regarding the computer application is as follows:

The program of the computer application should give the skills that are required for usage of the application software on the computer.An application like word processing, internet, etc.Also, the computer application includes internet explorer, paint, and Microsoft word.

Therefore we can conclude that Apple OSX is not a computer application.

Learn more about the computer here: brainly.com/question/24504878

What are the benefits of using LinkedIn Sales Navigator?

Answers

Answer:

Well, there are a number of advantages that come with this advanced LinkedIn automation tool. Here are some of the top benefits of a Sales Navigator:

1. Can find and export up to 5000 prospects at a time.

2. Enables you to send 30 InMails per month

3. Easy access Teamlink -enabling you to expand your network by pooling connections

4. Integrate with existing systems

Sites like Zillow get input about house prices from a database and provide nice summaries for readers. Write a program with two inputs, current price and last month's price (both integers). Then, output a summary listing the price, the change since last month, and the estimated monthly mortgage computed as (current_price * 0.051) / 12. Output each floating-point value with two digits after the decimal point, which can be achieved as follows: print('{:.2f}'.format(your_value))

Answers

Answer:

The program in Python is as follows:

current_price = int(input("Current Price: "))

last_price = int(input("Last Month Price: "))

change = current_price - last_price

mortgage = (current_price * 0.051) / 12

print('Change: {:.2f} '.format(change))

print('Mortgage: {:.2f}'.format(mortgage))

Explanation:

This gets input for current price

current_price = int(input("Current Price: "))

This gets input for last month price

last_price = int(input("Last Month Price: "))

This calculates the price change

change = current_price - last_price

This calculates the mortgage

mortgage = (current_price * 0.051) / 12

This prints the calculated change

print('Change: {:.2f} '.format(change))

This prints the calculated monthly mortgage

print('Mortgage: {:.2f}'.format(mortgage))

Answer:

current_price = int(input())

last_months_price = int(input())

change = current_price - last_months_price

mortgage = current_price * 0.051 / 12

print('This house is $', end= '')

print(current_price, end= '. ')

print('The change is $', end= '')

print(change, end= ' ')

print('since last month.')

print('The estimated monthly mortgage is $', end= '')

print(mortgage, end='0.\n')

g Add a throw statement to the processNumbers function that throws the message "An element in the list is not a number." if one of the elements in toProcess is not a number. Hint: The function isNaN() returns true if the parameter is not a number.

Answers

Answer and Explanation:

function processNumbers(alist){

var Ourarray= new array(alist);

Ourarray.foreach(

if(isNaN()){

Console.log( "An element in the list is not a number."};

break;

}

}

processNumbers(alist)

From the above, we have defined a function that takes an array parameter(the following array variable will make sure of that). We test each element in the array using foreach array function. The for each function runs the if statement and if isNan is true for each of the elements in the array.

A test for logical access at an organization being audited would include: Group of answer choices Checking that the company has a UPS and a generator to protect against power outages Making sure there are no unmanaged third-party service level agreements Performing a walkthrough of the disaster recovery plan Testing that super user (SYSADMIN) access is limited to only appropriate personnel

Answers

Answer:

Testing that super user (SYSADMIN) access is limited to only appropriate personnel.

Explanation:

A test for logical access at an organization being audited would include testing that super user (SYSADMIN) access is limited to only appropriate personnel.

5 Major of computer application

Answers

Im assuming you means applications as in Apps.

Microsoft windows
Microsoft internet Explorer
Microsoft office or outlook
Mcafee antivirus
Adobe pdf

Answer:

Basic Applications of Computer

1 ) Home. Computers are used at homes for several purposes like online bill payment, watching movies or shows at home, home tutoring, social media access, playing games, internet access, etc.

2 ) Medical Field.

3 ) Entertainment.

4 ) Industry.

5 ) Education.

Explanation:

Hope it helps you

Mark my answer as brainlist

have a good day

Identify the class of the address, the number of octets in the network part of the address, the number of octets in the host part of the address, the network number, and the network broadcast address g

Answers

Answer:

1.

190.190.190.190

Class B

Number of octets in the network part of the address: 2

Number of octets in the host part of the address: 2

Network number: 190.190.0.0/16

Network broadcast address: 190.190.255.255

2.

200.1.1.1

Class C

Number of octets in the network part of the address: 3

Number of octets in the host part of the address: 1

Network number: 200.1.1.0/24

Network broadcast address: 200.1.1.255

Explanation:

Which of the following BEST describes an inside attacker?
An agent who uses their technical knowledge to bypass security.
An attacker with lots of resources and money at their disposal.
A good guy who tries to help a company see their vulnerabilities.
An unintentional threat actor. This is the most common threat.​

Answers

The inside attacker should be a non-intentional threat actor that represents the most common threat.

The following information related to the inside attacker is:

It is introduced by the internal user that have authorization for using the system i.e. attacked.It could be intentional or an accidental.So it can be non-intentional threat.

Therefore we can conclude that The inside attacker should be a non-intentional threat actor that represents the most common threat.

Learn more about the threat here: brainly.com/question/3275422

Secure email technique that provides confidentiality, along with authentication, integrity, and non-repudiation. It uses a centralized trust model where users get a certificate from a trusted CA.

a. True
b. False

Answers

Answer:

a

Explanation:

just put a

Create a multimedia project that contains the text element and all the contents that you have studied about that element

Answers

Answer:

no sé jejejejeje

lslsl

lonsinet

ko

Create a python program that display this
Factorial Calculator
Enter a positive integer: 5
5! = 1 x 2 x 3 x 4 x 5
The factorial of 5 is: 120
Enter a positive integer: 4
4! = 1 x 2 x 5 x 4
.
The factorial of 4 is: 24
Enter a positive integer: -5
Invalid input! Program stopped!​

Answers

Answer:

vxxgxfufjdfhgffghgfghgffh

The Cartesian product of two lists of numbers A and B is defined to be the set of all points (a,b) where a belongs in A and b belongs in B. It is usually denoted as A x B, and is called the Cartesian product since it originated in Descartes' formulation of analytic geometry.

a. True
b. False

Answers

The properties and origin of the Cartesian product as stated in the paragraph

is true, and the correct option is option;

a. True

The reason why the above option is correct is stated as follows;

In set theory, the Cartesian product of two number sets such as set A and set

B which can be denoted as lists of numbers is represented as A×B and is the

set of all ordered pair or points (a, b), with a being located in A and b located

in the set B, which can be expressed as follows;

[tex]\left[\begin{array}{c}A&x&y\\z\end{array}\right] \left[\begin{array}{ccc}B(1&2&3)\\\mathbf{(x, 1)&\mathbf{(x, 2)}&\mathbf{(x, 3)}\\\mathbf{(y, 1)}&\mathbf{(y, 2)}&\mathbf{(y, 3)}\\\mathbf{(z, 1)}&\mathbf{(z, 2)}&\mathbf{(z, 3)}\end{array}\right]}[/tex]

The name Cartesian product is derived from the name of the philosopher,

scientist and mathematician Rene Descartes due to the concept being

originated from his analytical geometry formulations

Therefore, the statement is true

Learn more about cartesian product here:

https://brainly.com/question/13266753

a computer works on input processing output device
true
false​

Answers

a computer works on input processing output device true

Answer:

a computer works on input processing output device. True

Explanation:

God bless you.

What will be the pseudo code for this

Answers

Answer:

Now, it has been a while since I have written any sort of pseudocode. So please take this answer with a grain of salt. Essentially pseudocode is a methodology used by programmers to represent the implementation of an algorithm.

create a variable(userInput) that stores the input value.

create a variable(celsius) that takes userInput and applies the Fahrenheit to Celsius formula to it

Fahrenheit to Celsius algorithm is (userInput - 32) * (5/9)

Actual python code:

def main():

   userInput = int(input("Fahrenheit to Celsius: "))

   celsius = (userInput - 32) * (5/9)

   print(str(celsius))

main()

Explanation:

I hope this helped :) If it didn't tell me what went wrong so I can make sure not to make that mistake again on any question.    

A computer has many resources. A resource can be memory, disk drive, network bandwidth, battery power, or a monitor. It can also be system objects such as shared memory or a linked list data structure. This principle is based in object-oriented programming (OOP). In OOP, a class definition encapsulates all data and functions to operate on the data. The only way to access a resource is through the provided interface. Which security principle are we referring to

Answers

Answer:

The security principle being referred to here is:

Resource Encapsulation.

Explanation:

Resource Encapsulation is one of the cybersecurity first principles.  It allows access or manipulation of the class data as intended by the designer. The cybersecurity first principles are the basic or foundational propositions that define the qualities of a system that can contribute to cybersecurity.  Other cybersecurity first principles, which are applied during system design, include domain separation, process isolation, modularization, abstraction, least principle, layering, data hiding, simplicity, and minimization.

what is computer with figure​

Answers

Answer:

A computer is an electronic device that accept raw data and instructions and process it to give meaningful results.

Which is the most correct option regarding subnet masks?

Answers

Answer:

thanks for your question

Alexis received an email message from an unknown sender that included an attachment.

If she opens the attachment, what kind of malicious software might be activated, and what are the consequences?


Opening the attachment would release a worm, which would infect her system with a virus.


Opening the attachment would release a worm, which would infect her system with spyware.


Opening the attachment would release an active worm, which would infect her system with adware.


Opening the attachment would release a passive worm, which would infect her system with adware.

Answers

Answer:

Opening the attachment would release a worm, which would infect her system with a virus.

Answer:  B. Opening the attachment would release a worm, which would infect her system with a virus.

The tax calculator program of the case study outputs a floating-point number that might show more than two digits of precision. Use the round function to modify the program to display at most two digits of precision in the output number.

Answers

Answer:

Explanation:

The following code is written in Python. The tax calculator program was not provided, therefore I created a tax calculator that takes in the total price as an input and adds a 7% tax to it. Then it uses the round() function to make sure that the total is outputted as a decimal with two decimal digits at most.

def taxCalculator(price):

   total = price * 1.07

   formattedTotal = round(total, 2)

   return formattedTotal

A good machine should have the mechanical advantage of......?​

Answers

Answer:

The ideal mechanical advantage (IMA) of an inclined plane is the length of the incline divided by the vertical rise, the so-called run-to-rise ratio. The mechanical advantage increases as the slope of the incline decreases, but then the load will have to be moved a greater distance.

Explanation:

3. Coaxial/telephone cable sends
during the data transmission
signal

Answers

Answer:

high frequency signal.

you get a call from a customer who says she can't access your site with her username and password. both are case-sensitive and you have verified she is entering what she remembers to be her user and password correctly. what should you do to resolve this problem?

a. have the customer clear her browser history and retry

b. look up her username and password, and inform her of the correct information over the phone

c. have the user reboot her system and attempt to enter her password again

d. reset the password and have her check her email account to verify she has the information

Answers

Answer:

answer would be D. I do customer service and would never give information over the phone always give a solution

In order to resolve this problem correctly, you should: D. reset the password and have her check her email account to verify she has the information.

Cybersecurity can be defined as a group of preventive practice that are adopted for the protection of computers, software applications (programs), servers, networks, and data from unauthorized access, attack, potential theft, or damage, through the use of the following;

Processes.A body of technology.Policies.Network engineers.Frameworks.

For web assistance, the security standard and policy which must be adopted to enhance data integrity, secure (protect) data and mitigate any unauthorized access or usage of a user's sensitive information such as username and password, by a hacker, is to ensure the information is shared discreetly with the user but not over the phone (call).

In this context, the most appropriate thing to do would be resetting the password and have the customer check her email account to verify she has the information.

Read more: https://brainly.com/question/24112967

g A catch block that expects an integer argument will catch Group of answer choices all exceptions all integer exceptions any exception value that can be coerced into an integer C

Answers

Answer:

Hence the correct option is 2nd option. all integer exceptions.

Explanation:

A catch block that expects an integer argument will catch all integer exceptions.

Write a program that takes a date as input and outputs the date's season. The input is an integer to represent the month and an integer to represent the day. Ex: If the input is: 4 11 the output is: spring In addition, check if both integers are valid (an actual month and day). Ex: If the input is: 14 65 the output is: invalid The dates for each season are: spring: March 20 - June 20 summer: June 21 - September 21 autumn: September 22 - December 20 winter: December 21 - March 19

Answers

Answer:

Explanation:

The following program is written in Java. It is a function that takes in the two parameters, combines them as a String, turns the combined String back into an integer, and uses a series of IF statements to check the parameters and determine which season it belongs to. Then it prints the season to the screen. The code has been tested with the example provided in the question and the output can be seen in the attached image below.

class Brainly {

   public static void main(String[] args) {

       getSeason(4, 65);

       getSeason(4, 11);

   }

   public static void getSeason(int month, int day) {

       String combined = String.valueOf(month) + String.valueOf(day);

       int combinedInt = Integer.parseInt(combined);

       if ((month > 0 && month < 12) && (day > 0 && day < 31)) {

           if ((combinedInt >= 320) && (combinedInt <= 620)) {

               System.out.println("The Season is Spring");

           } else if ((combinedInt >= 621) && (combinedInt <= 921)) {

               System.out.println("The Season is Summer");

           } else if ((combinedInt >= 922) && (combinedInt <= 1220)) {

               System.out.println("The season is Autumn");

           } else {

               System.out.println("The Season is Winter");

           }

       } else {

           System.out.println("Invalid date");

       }

   }

}

Consider a network that is a rooted tree, with the root as its source, the leaves as its sinks, and all the edges directed along the paths from the root to the leaves. Design an efficient algorithm for finding a maximum flow in such a network. What is the time efficiency of your algorithm

Answers

Answer:

please mark me brainlist

Explanation:

the base on which the number n=(34)? is written if it has a value of n= (22)10​

Answers

If I'm understanding the question correctly, you are looking for an integer b (b ≠ 0, b ≠ 1) such that

[tex]34_b = 22_{10}[/tex]

In other words, you're solving for b such that

b ¹ + 4×b ⁰ = 22

or

3b + 4 = 22

Solving this is trivial:

3b + 4 = 22

3b = 18

b = 6

So we have

34₆ = 22₁₀

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