When implementing a 1:1 relationship, where should you place the foreign key if one side is mandatory and one side is optional? Should the foreign key be mandatory or optional?

Answers

Answer 1

Answer:

When implementing a 1:1 relationship, the foreign key should be placed on the optional side if one side is mandatory and one side is optional.  

When this is implemented, the foreign key should be made mandatory.

Explanation:

A foreign key (FK) is a primary key (PK) in relational databases.  It is used to establish a relationship with a table that has the same attribute with another table in the database.  A mandatory relationship exists when the foreign key depends on the parent (primary key) and cannot exist without the parent.  A one-to-one relationship exists when one row in a data table may be linked with only one row in another data table.


Related Questions

similarities between inline css and internal css​

Answers

Answer:

CSS can be applied to our website's HTML files in various ways. We can use an external css, an internal css, or an inline css.

Inline CSS : It can be applied on directly on html tags. Priority of inline css is greater than inline css.

Internal CSS : It can be applied in web page in top of the page between heading tag. It can be start with

Start with the following Python code.
alphabet = "abcdefghijklmnopqrstuvwxyz"
test_dups = ["zzz","dog","bookkeeper","subdermatoglyphic","subdermatoglyphics"]
test_miss = ["zzz","subdermatoglyphic","the quick brown fox jumps over the lazy dog"]
def histogram(s):
d = dict()
for c in s:
if c not in d:
d[c] = 1
else:
d[c] += 1
return d

Copy the code above into your program but write all the other code for this assignment yourself. Do not copy any code from another source.

Write a function called has_duplicates that takes a string parameter and returns True if the string has any repeated characters. Otherwise, it should return False.

Implement has_duplicates by creating a histogram using the histogram function above. Your implementation should use the counts in the histogram to decide if there are any duplicates.

Write a loop over the strings in the provided test_dups list. Print each string in the list and whether or not it has any duplicates based on the return value of has_duplicates for that string. For example, the output for "aaa" and "abc" would be the following.

aaa has duplicates
abc has no duplicates

Print a line like one of the above for each of the strings in test_dups.

Answers

Answer:

huwugsgssuaihsux h baiThatha svaadishht us

Is" Python programming Language" really
worth studying? If yes? Give at least 10 reasons.

Answers

1. Python is a particularly lucrative programming language

2. Python is used in machine learning & artificial intelligence, fields at the cutting-edge of tech

3. Python is simply structured and easy to learn

4. Python has a really cool best friend: data science dilemma.

5. Python is versatile in terms of platform and purpose

6. Python is growing in job market demand

7. Python dives into deep learning

8. Python creates amazing graphics

9. Python supports testing in tech and has a pretty sweet library

10. There are countless free resources available to Python newbies

What are the differences between sequential and random files? Which one do you think is better and why?

Answers

Answer:

Sequential is better

Explanation:

Sequential is more organized while the more easier to make but less dependable one is random.

sequential is used for things such as date of birth, or where someone was born.

you can't do that with a random file.

OSI model layers application in mobile computing

Answers

Answer:

The OSI Model (Open Systems Interconnection Model) is a conceptual framework used to describe the functions of a networking system. The OSI model characterizes computing functions into a universal set of rules and requirements in order to support interoperability between different products and software.

a do-while loop that continues to prompt a user to enter a number less than 100, until the entered number is actually less than 100. End each prompt with newline Ex: For the user input 123, 395, 25, the expected output is:Enter a number (<100):Enter a number (<100):Enter a number (<100):Your number < 100 is: 25

Answers

Answer:

Explanation:

import java.util.Scanner;  

//Declare the class NumberPrompt.  

public class NumberPrompt  

{  

  public static void main(String args[])  

  {  

       /*Declare the variable of scanner class and allocate the  

       memory.*/  

       Scanner scnr = new Scanner(System.in);  

       

       //Initialize the variable userInput.  

       int userInput = 0;

       /* Your solution goes here*/

       //Start the do-while loop

       do

       {

         //Prompt the user to enter the number.

         System.out.println("Enter a number(<100)");  

         

         /*Store the number entered by the user in the

         variable userInput.*/

         userInput=scnr.nextInt();

           

       }while(userInput>=100);/*Run the do-while loop till the    

       user input is greater than 100*/  

       

       //Print the number which is less than 100.

       System.out.println("Your number <100 is "+userInput);

       return;

  }

}

Output:-

A hierarchy chart can be helpful for a. planning the functions of a program b. naming the functions of a program c. showing how the functions of a program relate to each other d. all of the above e. a and c only

Answers

Answer:

Hence the correct options are option B and option C.

Explanation:  

Hierarchy Chart means top to bottom structure 0f a function or a program or an organization.  

Planning the functions of a program means deciding beforehand that what are the functions of a program and what to try to do and when to try to, hierarchy Charts are often helpful In doing/knowing this all.

   Showing how the functions of a program relate to every other means what's the connection between two functions for instance if we have a hierarchical chart of a corporation member then we'll have the connection among the members of the team i.e., first, we'll have CEO, then Manager then team/ project lead then team members and by using hierarchical chart ready to " we will be able to identify the connection among them. during a similar way, we will have a relationship among the functions of a program using the hierarchical chart.

Compare and contrast traditional and cloud data backup methods. Assignment Requirements You are an experienced employee of the DigiFirm Investigation Company. Chris, your team leader, explains that your biggest client, Major Corporation, is evaluating how they back up their data. Chris needs you to write a report that compares traditional backup methods to those provided by a cloud service provider, including the security of cloud services versus traditional forms of on-site and off-site backup. For this assignment: 1. Research both traditional and cloud data backup methods. 2. Write a paper that compares the two. Make sure that you include the security of cloud services versus traditional forms of on-site and off-site backup. Required Resources Course textbook Internet Submission Requirements Format: Microsoft Word Font: Arial, size 12, double-space Citation Style: Follow your school's preferred style guide Length: 1-2 pages If-Assessment Checklist I researched both traditional and cloud data backup methods. I wrote a report that compares the two. I included the security of cloud services versus traditional forms of on-site and off-site backup. I organized the information appropriately and clearly. . I created a professional, well-developed report with proper documentation, grammar, spelling, and nunctuation

Answers

Answer:

Ensures all database elements are known and secured through inventory and security protocols. Catalogs databases, backups, users, and accesses as well as checks permissioning, data sovereignty, encryption, and security rules. 

Security Risk Scoring

Proprietary Risk Assessment relays the security posture of an organization's databases at-a-glance through risk scores.

 Operational Security

Discovers and mitigates internal and external threats in real time through Database Activity Monitoring plus alerting and reporting. Identifies and tracks behavior while looking for anomalous activity internally and externally.

Database Activity Monitoring

Monitors 1 to 1,000+ databases simultaneously, synthesizing internal and external activity into a unified console.

Only by covering both of these areas can organizations have defense in depth and effectively control risk.

Hello everybody,
For the quiz questions, I tried using the circular method, but got a numeric, period or comma error?
So I tried using the solver to find the same solution I got, but when I entered it in the answer box, he always said incorrectly.
Any help would be highly appreciated and write the results here, why do I have to read the solution quiz because I was wrong? thank you.


The bisection method is being used to calculate the zero of the following function between x = 0 and x = 1.
What is the midpoint for the 3rd iteration? (The midpoint for the 1st iteration is 0.5.) Provide your answer rounded to the thousandths place.

Answers

Answer:

i don't know the answer please tell me

Type the correct answer in the box. Spell all words correctly.
Page scaling mode helps increase or reduce the size of the worksheet to fit within the set number of pages to be printed. Which option re-scales
a worksheet vertically?
To re-scale a worksheet vertically, select the number of pages in the height text box in the____group.

Answers

Answer:

Scale to fit.

Explanation:

The scale to fit group can be found in the page layout tab as it is used to deal with display of functionalities of a document and spreadsheet program. The scale to fit requires input in the width option which will dictate the width of the page in which to place the documents on. By specifying 1 for the width, this means that the document will be rescaled to fit on a single page. The automatic option may be selected for the height option which will allow the program to make an auto Decison in the shrinkage depending on the stated width value.

What are the best websites to learn about Java Programing?

Answers

Answer:

well you can download some apps from the play store and it is easy for you to learn from there (interactive)

I really need To know how To get The special ending for final fight 2 for super nintendo it’s a video game

Answers

Answer:

Check Yt

Explanation:

More often than not there are many video tutorials about every game imaginable.

Microsoft office can be classified under what heading of application

Answers

Answer:

Word processing software/application

pls mark as brainliest!

Have a grt day!!!

WHAT IS ONE WAY A PIVOTTABLE COULD COMBINE THE FOLLOWING DATA

Answers

Answer: You sort table data with commands that are displayed when you click a header arrow button. Hope it help's :D

. In the select algorithm that finds the median we divide the input elements into groups of 5. Will the algorithm work in linear time if we divide it into groups of 7? How about 3? Explain your answer--- the asymptotic run time in either case.

Answers

Answer:

we have that it grows more quickly than linear.

Explanation:

It will still work if they are divided into groups of 77, because we will still know that the median of medians is less than at least 44 elements from half of the \lceil n / 7 \rceil⌈n/7⌉ groups, so, it is greater than roughly 4n / 144n/14 of the elements.

Similarly, it is less than roughly 4n / 144n/14 of the elements. So, we are never calling it recursively on more than 10n / 1410n/14 elements. T(n) \le T(n / 7) + T(10n / 14) + O(n)T(n)≤T(n/7)+T(10n/14)+O(n). So, we can show by substitution this is linear.

We guess T(n) < cnT(n)<cn for n < kn<k. Then, for m \ge km≥k,

\begin{aligned} T(m) & \le T(m / 7) + T(10m / 14) + O(m) \\ & \le cm(1 / 7 + 10 / 14) + O(m), \end{aligned}

T(m)

 

≤T(m/7)+T(10m/14)+O(m)

≤cm(1/7+10/14)+O(m),

therefore, as long as we have that the constant hidden in the big-Oh notation is less than c / 7c/7, we have the desired result.

Suppose now that we use groups of size 33 instead. So, For similar reasons, we have that the recurrence we are able to get is T(n) = T(\lceil n / 3 \rceil) + T(4n / 6) + O(n) \ge T(n / 3) + T(2n / 3) + O(n)T(n)=T(⌈n/3⌉)+T(4n/6)+O(n)≥T(n/3)+T(2n/3)+O(n) So, we will show it is \ge cn \lg n≥cnlgn.

\begin{aligned} T(m) & \ge c(m / 3)\lg (m / 3) + c(2m / 3) \lg (2m / 3) + O(m) \\ & \ge cm\lg m + O(m), \end{aligned}

T(m)

 

≥c(m/3)lg(m/3)+c(2m/3)lg(2m/3)+O(m)

≥cmlgm+O(m),

therefore, we have that it grows more quickly than linear.

The First Web page you will see every time you launch the Web Browser Application is called​

Answers

Answer:

HomePage

Explanation:

Define firewall ?with example

Answers

Explanation:

it acts as a barrier between a trusted system or network and outside connections, such as the Internet. However, a computer firewall is more of a filter than a wall, allowing trusted data to flow through it. ... For example, a basic firewall may allow traffic from all IP.

if my answer helps you than mark me as brainliest.

Answer:

hope this helps

Explanation:

Firewalls are software or hardware that work as a filtration system for the data attempting to enter your computer or network. Firewalls scan packets for malicious code or attack vectors that have already been identified as established threats.And also firewall is a network security device that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules.

The advantage of returning a structure type from a function when compared to returning a fundamental type is that a. the function can return multiple values b. the function can return an object c. the function doesn’t need to include a return statement d. all of the above e. a and b only

Answers

Answer:

The advantage of returning a structure type from a function when compared to returning a fundamental type is that

e. a and b only.

Explanation:

One advantage of returning a structure type from a function vis-a-vis returning a fundamental type is that the function can return multiple values.  The second advantage is that the function can return can an object.  This implies that a function in a structure type can be passed from one function to another.

Write a function called changeCharacter that takes three parameters – a character array, its size, and the replacement character – to change every third character in the array to its replacement character

(C++ coding)

Answers

Method explanation:

Defining a method "changeCharacter" that takes three parameters that are "character array", and two integer variable "s, k" in its parameters.Inside the method, a for loop is declared that takes array value and defines a conditional statement that checks the 3rd character value in the array, is used to the array that holds its key-value.Please find the full program in the attachment.

Method description:

void changeCharacter(char* ar, int s, int k)//defining a method changeCharacter that takes three parameters

{

  for(int j = 1; ar[j]!='\0'; j++)//defining a for loop for 3rd character value in array  

  {

      if(j%3== 0)//use if block that check 3rd character value in array  

      {

          ar[j-1] = k; //Changing the 3rd character in array

      }

  }

}

Learn more:

Program: brainly.com/question/12975989

True or False.
Figuring out the learning styles of your instructors will help you better understand how they prefer to teach.

Answers

Possibly true but depends if you can understand their ways
It different for everyone some ppl can find what their teacher gives them is helpful and some students think a different way

Write the Java code for the calculareDiameter method.

Answers

Answer:

* Program to find diameter, circumference and area of circle.

*/

import java.util.Scanner;

public class Circle {

   public static void main(String[] args) {

       // Declare constant for PI

       final double PI = 3.141592653;

       Scanner in = new Scanner(System.in);

       /* Input radius of circle from user. */

       System.out.println("Please enter radius of the circle : ");

       int r = in.nextInt();

       /* Calculate diameter, circumference and area. */

       int d = 2 * r;

       double circumference = 2 * PI * r;

       double area = PI * r * r;

       /* Print diameter, circumference and area of circle. */

       System.out.println("Diameter of circle is : " + d);

       System.out.println("Circumference of circle is : " + circumference);

       System.out.println("Area of circle is : " + area);

   }

}

After reading the background, please work on the following problem: a. The source process reads information from a file (Therefore, you need to prepare a small text file for testing purpose). b. The source process calls fork() to create the filter process. c. The filter process reads information from the source process (passed via an anonymous pipe), converts the uppercase characters to lowercase ones and vice versa, and then prints out the converted characters to the screen.

Answers

Answer:

Explanation:

The following code is written in Java. It has the main method (source process) and a function called fork() which contains the filter process as described in the question. fork() takes in the file information as a parameter and prints out the information to the screen. The test can be seen with the output in the attached image below.

import java.io.File;

import java.io.FileNotFoundException;

import java.util.Scanner;

class Brainly {

   public static void main(String[] args) {

       String data = "";

       try {

           File myObj = new File("C:\\Users\\Gabriel2\\AppData\\Roaming\\JetBrains\\IdeaIC2020.2\\scratches\\input.txt"); //USE YOUR FILE LOCATION

           Scanner myReader = new Scanner(myObj);

           while (myReader.hasNextLine()) {

               data += myReader.nextLine();

               data += "\n";

           }

           myReader.close();

       } catch (FileNotFoundException e) {

           System.out.println("An error occurred.");

           e.printStackTrace();

       }

       System.out.println("Original: \n" + data);

       fork(data);

   }

   public static void fork(String data) {

       String output = "";

       for (int i = 0; i < data.length(); i++) {

           if (Character.isUpperCase(data.charAt(i)) == true) {

               output += Character.toLowerCase(data.charAt(i));

           } else if (Character.isLowerCase(data.charAt(i)) == true) {

               output += Character.toUpperCase(data.charAt(i));

           } else {

               output += data.charAt(i);

           }

       }

       System.out.println("Modified: \n" + output );

   }

}

2.13 LAB: Branches: Leap Year
A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the
difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The
requirements for a given year to be a leap year are:
1) The year must be divisible by 4
2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400
Some example leap years are 1600, 1712 and 2016.
Write a program that takes in a year and determines whether that year is a leap year.
Ex If the input is
1712
the output is
1712 13 leap year.
Ex If the nouts
1913
the outoutis
1913 not leap year.
Written is Coral Language

Answers

Answer:

integer userInput

userInput = Get next input

if userInput % 400 == 0

  Put userInput to output

  Put " is a leap year" to output

else

  if userInput % 4 == 0

     Put userInput to output

     Put " is a leap year" to output

  else

     Put userInput to output

     Put " is not a leap year" to output

Explanation:

I don't know what is so special about Coral but here we go. I couldn't find and IDE that supported Coral so I just used their Coral simulator on their website. The first if statement on line 5 determines if the number is divisible by 400. If so, the leap year is on a century year e.g 1900 1800. If not, the else statement will be executed and the second if statement will execute. If the number is divisible by 4, it is a leap year. If not, the else statement gets executed in which case the number was not a century leap year or a leap year. After that the program terminates.

Hope this helped :)  If it didn't let me know and I do my best to find out what went wrong.

Have a good day :)

What is a computer system

Answers

Answer:

A computer along with additional hardware and software together is called a computer system. A computer system primarily comprises a central processing unit (CPU), memory, input/output devices and storage devices. All these components function together as a single unit to deliver the desired output.

Explanation:

pls mark brainliest

Compute the acceleration of gravity for a given distance from the earth's center, distCenter, assigning the result to accelGravity. The expression for the acceleration of gravity is: (G * M) / (d2), where G is the gravitational constant 6.673 x 10-11, M is the mass of the earth 5.98 x 1024 (in kg) and d is the distance in meters from the earth's center (stored in variable distCenter).
#include
using namespace std;
int main() {
double G = 6.673e-11;
double M = 5.98e24;
double accelGravity;
double distCenter;
cin >> distCenter;
/* Your solution goes here */
cout << accelGravity << endl;
return 0;
}

Answers

Answer:

Replace /* Your solution goes here */ with the following expression

accelGravity = (G * M) / (distCenter *distCenter );

Explanation:

Required

Complete the code

The equivalent expression of (G * M) / (d^2) is:

(G * M) / (distCenter *distCenter );

The expression must be stored in accelGravity.

So, we have:

accelGravity = (G * M) / (distCenter *distCenter );

what is
computer.write its example

Answers

The definition of a computer is a person or electronic device that makes and stores quick calculations or processes information. An example of a famous human computer is Ada Lovelace. An example of a computer is the MacBook.

Research via the internet and find an article in the news regarding wireless hacking, hardware hacking, or other security breach. As security and IT changed so rapidly, your article should be no older than 2007 (i.e. Less than 5 years old). Summarize the article using at least 500 words.

Answers

Hi, I provided some explanation of key terms.

Explanation:

Wireless hacking: basically the term refers to any unethical activity carried over a radio wave-connected network (eg Internet or Wifi connection) that would provide unauthorized access to information.

Hardware hacking: On the other hand, hardware hacking involves resetting physical hardware with the objective of using it in a way not originally intended by the manufacturer.

What is the relationship between an organization’s specific architecture development process and the Six-Step Process?

Answers

Answer:

It is a method of developing architecture in various stages

Explanation:

The organization-specific architecture developmental process is a tested and repeated process for developing architecture. It made to deal with most of the systems. It describes the initial phases of development.  While the six step process is to define the desired outcomes, Endorse the process, establish the criteria and develop alternatives. Finally to document and evaluate the process.

In the welding operations of a bicycle manufacturer, a bike frame has a long flow time. The set up for the bike frame is a 7 hour long operation. After the setup, the processing takes 6 hour(s). Finally, the bike frame waits in a storage space for 7 hours before sold. Determine the value-added percentage of the flow time for this bike frame. Round your answer to the nearest whole number for percentage and do NOT include the "%" sign in the answer. For example, if your answer is 17.7%, please answer 18. If your answer is 17.4%, please answer 17. No "%" sign. No letter. No symbols. No explanation. Just an integer number.

Answers

Answer:

Bike Frame Flow Time

The value-added percentage of the flow time for this bike frame is:

= 46.

Explanation:

a) Data and Calculations:

Bike Frame Flow Time:

Setup time = 7 hours

Processing time = 6 hours

Storage time = 7 hours

Flow time of the bike frame = 13 hours (7 + 6)

Value-added percentage of the flow time for this bike frame = 6/13 * 100

= 46%

b) Flow time represents the amount of time a bicycle frame spends in the manufacturing process from setup to end.  It is called the total processing time. Unless there is one path through the process, the flow time equals the length of the longest process path.  The storage time is not included in the flow time since it is not a manufacturing process.

3. Write a program that prompts the user to input an integer that represents cents. The program will then calculate the smallest combination of coins that the user has. For example, 27 cents is 1 quarter, 0 nickle, and 2 pennies. That is 27=1*25+0*5+2*1.

Answers

Answer:

The program in Python is as follows:

cents = int(input("Cents: "))

qtr = int(cents/25)

cents = cents -qtr * 25

nkl = int(cents/5)

pny = cents -nkl * 5

print(qtr,"quarters,",nkl,"nickels,",pny,"pennies")

Explanation:

This gets input for cents

cents = int(input("Cents: "))

This calculates the quarters in cents

qtr = int(cents/25)

This gets the remaining cents

cents = cents -qtr * 25

This calculates the nickel in remaining cents

nkl = int(cents/5)

This calculates the pennies in remaining cents

pny = cents -nkl * 5

This prints the required output

print(qtr,"quarters,",nkl,"nickels,",pny,"pennies")

Other Questions
how does heavy consumption of alcohol affect reproductive system of humans?1. it increases the frequency of menstruation in women.2. it increases testosterone production and sex drive in men3. it shrinks the size of the testicles4. it increases testosterone producing in women They.... a new computer ( to get )a) be going to b) will You are receiving an shipment and come across a box of shaving cream.What should you do? Please choose all that apply. 17. ralph is 3 times as old as sarah. in 4 years ralph will only be twice as old as sara will be then. find ralphs age now. Write the word that is part of speech indicated in the parenthesis Let f (x) = 3x + 1 and let g(x) = x - 1. Find (fog) (5)0 0O 15O 4O 7 Adaptation:Question 4Which phrase indicates that organisms in a population with the best-adapted set of traits become more common over time?Select one:Mutations are not harmful.Bigger is better.All organisms have a common ancestor.Survival of the fittest. que clase de concurrencia vocalica presenta La palabra "ahuyentar"? Form a union for the following sets.M = {1, 2, 4, 8)N = (2,5,8) Joan conducted a study to see how common binge drinking is on her college campus. She defined frequent binge drinking as having five or more drinks in a row three or more times in the past two weeks. Out of 593 students who replied to her survey, 64 fit this criterion. What is the 99% confidence interval for this population proportion? Answer choices are rounded to the hundredths place. A girl is 18 years younger than her mother. In 6 years time, the sum of their ages will be 54. How old is the girl now? What is the solution to the system that is created by the equation y = - x + 6 Based on a predicted level of production and sales of 30,000 units, a company anticipates total contribution margin of $105,000, fixed costs of $40,000, and operating income of $65,000. Based on this information, the budgeted operating income for 28,000 units would be How to find joint and combined variation? if PDT is 30 years, what will be Pgr.. Martin Luther King Jr. often spoke of a day in the future when he hoped that his children would be judged not by their skin color but instead by their character. Write a narrative essay about a moment in your life when you were judged by something other than the content of your character. Use narrative techniques to develop experiences, events, and characters.Please don't copy someone else's work, I need an original story. And please do it fast, but don't rush.Thanks!25points Select all decimals that are equivalent to (9100)+(210)+(3110)+(51100). A. 92.35 B. 920.350 C. 902.35 D. 92.350 E. 920.35 F. 920.035 I really need help If each month in a year was paired with all the possible numbers of days in the month will the result be a function? Explain Find the value of zA.110B.141C.80D.100 Which of the following are the best definitions of the decision variables? finish time of activity , for time to be crashed, i.e., saved, for activity ,for start time of activity , for time to be crashed, i.e., saved, for activity ,for finish time of activity , for start time of activity , for start time of activity ,for time finally used by activity i space, for i equals A comma B comma C comma D comma E comma F comma G comma H None of the above.