what is tuple and attribute of a relation​

Answers

Answer 1

Answer:

An attribute value is an attribute name paired with an element of that attribute's domain, and a tuple is a set of attribute values in which no two distinct elements have the same name. Thus, in some accounts, a tuple is described as a function, mapping names to values.

Explanation:


Related Questions


Compare and contrast the shooting system using a film camera and a digital camera.

Answers

Answer:

Compared to film, digital cameras are capable of much higher speed (sensitivity to light) and can perform better in low light or very short exposures. The effective speed of a digital camera can be adjusted at any time, while the film must be changed in a film to change the speed.

I only have the compare :\

Explanation:

the benefits and drawbacks of online banking compared to walking into a brick and mortar bank branch to complete your banking face to face

Answers

Answer:

Pros and Cons of Online Banking

Advantages

It is fast and efficient. Funds get transferred from one account to the other very fast. You can also manage several accounts easily through internet banking.

Disadvantages

Your banking information may be spread out on several devices, making it more at risk.

Pros of online banks:

Earn more interest on your savings

Potential for lower fees or no fees

Convenience of online banking

Cons of online banks:

Potential for higher ATM fees

Not ideal for those who don’t use the internet

Online transactions can take time to process

Motor Banking

A brick-and-mortar bank also can be a good place to get help for other aspects of your finances. ... If you're paying a lot of money in credit card interest to various other banks, your bank branch employees might be able to offer you a debt consolidation loan to help you save money.

Pros of brick-and-mortar banks:

You can stop by in person to ask questions

Convenience and a personal experience

You may have access to a broad ATM network

Cons of brick-and-mortar banks:

Fees and interest rates may not be competitive

Most big banks pay almost nothing on their savings accounts

Video-sharing sites allow videos to be uploaded in which file format? A. .avi B. .svg C. .tiff D. .xls

Answers

Answer:

The answer to this question is given below in the explanation section.

Explanation:

This question is about video-sharing sites and in it asked which file format are allowed for uploading the video file.

a. AVI (True)

Yes, all video sharing sites allow uploading avi file. because .avi format file is a kind of video file format such as mp4, 3gp etc.

B. SVG (False)

SVG format files belong to images and SVG means scalable vector graphics. The file that has .svg extension is not a video file it is an image file.

C. tiff (False)

.tiff mean tagged image file format and it is a graphics or image file. So, it does not belong to any video file format.

D. xls (False)

This is not true. Because .xls shows that it is an excel file. Excel is a type of spreadsheet software that is used to store data and to calculate the data. so, it is not a format of the video file and video sharing sites do not allow the upload such type of file.

Answer:

A. .avi

Explanation:

Mac or PC (need opinions please)

Why did you choose Mac/PC?

Answers

Answer:

obviously Mac like mac

Answer:

I think mac obviously Mac

You are writing a paper and find some information you want to use in a journal article: Original text: Among students with incorrect answers at pre- and posttest, the largest percentage had trouble recognizing an example of patchwork plagiarism. Apparently, many did not understand that cutting and pasting is plagiarism. Source: Fenster, Judy. "Teaching Note—Evaluation of an Avoiding Plagiarism Workshop for Social Work Students." Journal of Social Work Education, vol. 52, no. 2, Apr-Jun 2016, pp. 242-248. Academic Search Complete, doi:10.1080/10437797.2016.1151278 Entry in your paper: Among students with incorrect answers, most couldn't recognize patchwork plagiarism and did not understand that cutting and pasting is plagiarism. What is your judgment- is this plagiarism?

Answers

Answer:

The answer is "True".

Explanation:

The term Plagiarism is a word, that implies as a form of cheating, which includes the usage, of all or part, of its thoughts, words, designs, arts, the music of anyone else without any of the author's recognition or permission.

In the question, it is already defined that students copy and paste the data, which is lying in the criteria of plagiarism, that's why the given statement is "true".

Question # 2
Multiple Choice
Which of these scenarios demonstrates why an art director is necessary?


A group of theme park designers meet to discuss ideas for a new attraction.

An artist graduates from a prestigious school, but can’t find work in fine art.

An advertising executive looks at a print layout and says, “I don’t like it. It’s too odd-looking.”

A game designer must take a popular game and design a sequel for it.
Question # 3
Multiple Choice
An applicant for the position of art director has a fine reputation as a designer and innovator, but his supervisor says that he is awkward and uncommunicative around non-artists. Should the artist be hired as art director?


No, because he lacks the finesse needed to deal with both creatives and marketing personnel.

Yes, because it is more important for an art director to communicate with artists than anyone else.

No, because he most likely couldn’t take the stress that goes with the job.

Yes, because he should be given a chance to improve his social skills.
Question # 4
Multiple Choice
The art director is meeting with the brand strategist. What are they most likely doing?


discussing where the copy will be placed in the latest print ad

comparing images proposed for an updated logo

reviewing the music for an online video commercial

brainstorming ideas for a social media campaign

Answers

Answer:

1. An advertising executive looks at a print layout and says, “I don’t like it. It’s too odd-looking.”

2. No, because he lacks the finesse needed to deal with both creatives and marketing personnel.

3. Brainstorming ideas for a social media campaign

Explanation:

1. An Art Director is mostly involved in the development of images and visual content that would appeal to a specific audience. So, when the advertising executive looks at a print layout and wants some adjustments done to it, the art director would be needed because this work involves visuals.

2. If an applicant for the position of an art director is excellent at his job, but does not communicate well with non-artists, he should not be hired for the job because his work mainly revolves around artists such as the creative directors and brand strategists as well as the marketing team members and he needs to effectively communicate with them especially in an advertising agency.

3. The brand strategist basically brainstorms ideas meant to sell a product and this might require discussing with the art director on the best ways to implement this.

What is a class in CSS?
a grouping of HTML tags for which style properties can be declared
a selector used to define a unique style
a tag used to apply styles to a block of content
the part of a declaration describing the type of style to be applied

Answers

A tag used to apply styles to a block of content.

Answer- A: a grouping of HTML tags for which style properties can be declared

Explanation: "In CSS, a class is a group of elements that are the same or similar. You can have as many elements as you want in a class. And each element can be the member of multiple classes. Every class has CSS attributes (like color and font-size) that are specific to that class. CSS classes are similar to a real-life class." skillcrush.com

2. Discuss how science and mathematics have influenced technological development. Cite examples of how products have evolved.​

Answers

Answer:

Science helps technology by. Scientist creating the tech, and creating the technology we need. Math helps by, Animation creating

(layers, frames, etc) I can also help with coding. Coding is very important when using technology. We need math and science when it comes to technology. Hoped this helped :)

Explanation:

The impact made by the advancement in technology cannot be overemphasized, this has largely been down to the leverage of mathematical and scientific knowledge in the aspect of computer literacy, engineering and research.

Technology has been developed heavily in the aspect of computing where mathematical and scientific knowledge has been hugely developed in building mathematical and statistical models on the aspect of artificial intelligence and machine learning.

Robotics engineering and space exploration are have been made possible largely due to the computational mathematics and physics.

Therefore, science and mathematics have largely influenced technological development.

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coding could help prevent car crashes with automatic driving cars; however, some are afraid of tha because it allows control over people.what do you think? safety verse power verse privacy?​

Answers

Answer:

Honestly self driving cars are the future of humans and it can and will help us evolve. It could possibly be more dangerous if someone messed up the coding and it can be hacked by almost anyone with coding abilities, so it all depends on how safe you think you will be not driving yourself anywhere. Overall it could go both ways( good or bad.)

Hope this helped

Explanation:

Instructions
Write the code to input a number and print the square root. Use the absolute value function to make sure that if the user enters a
negative number, the program does not crash.

Answers

Answer:

*** Python Code ***

from math import sqrt

def squareRoot(x):

   print(sqrt(abs(x)))

squareRoot(float(input("Square-root of this number: ")))

*** Sample Input ***

Square-root of this number: 4

*** Sample Output ***

2.0

Explanation:

For this problem, we will simply use the python built-in methods for finding the square root and taking the absolute value of a number.

Line 1:  from math import sqrt

This line of code imports the square root method from the math module so we can compute the square root of our number

Line 2: def squareRoot(x):

This line of code is a function definition of a method we are creating called "sqareRoot" in which it takes a single argument x

Line 3:  print(sqrt(abs(x)))

This line of code takes the absolute value of the function argument x, takes the square root of that number, and then prints the result to the console

Line 4:  squareRoot(float(input("Square-root of this number: ")))

This line of code takes in a user input number, converts the string to a float, and then passes the number as the argument to our user defined function squareRoot

Cheers.

Which of the following is true of a procedure? Check all that apply.

It can be reused.

It saves programmers time.

It is a block of code that performs a single task.

It lets you exit a function.

Answers

Answer:

A, B, C

Explanation:

ye

Answer:

It is

A

B

C

Explanation:

Got it right on edge

Why do we have to watch a video to get answers?

Answers

Answer:

The videos contain the answers.

Explanation:

Hey there!

Watching a video can help understand the concept better. If you watch the video, you will learn more. It's also a  benefit to watch a video. For many people who can't understand, they can learn by watching the video. So this is a good way to understand things better: watching a video.

Hope this helps!

differentiate between third and fourth generation of computer​

Answers

Answer: third generation of computer are larger than fourth generation. ... IC chips were used whereas in fourth generation microprocessor were used. fourth generation consumed less electricity than third generation.

Design and implement an algorithm that gets as input a list of k integer values N1, N2,..., Nk as well as a special value SUM. Your algorithm must locate a pair of values in the list N that sum to the value SUM. For example, if your list of values is 3, 8, 13, 2, 17, 18, 10, and the value of SUM is 20, then your algorithm would output either of the two values (2, 18) or (3, 17). If your algorithm cannot find any pair of values that sum to the value SUM, then it should print the message ‘Sorry, there is no such pair of values’. Schneider, G.Michael. Invitation to Computer Science (p. 88). Course Technology. Kindle Edition.

Answers

Answer:

Follows are the code to this question:

def FindPair(Values,SUM):#defining a method FindPair  

   found=False;#defining a boolean variable found

   for i in Values:#defining loop for check Value  

       for j in Values:#defining loop for check Value

           if (i+j ==SUM):#defining if block that check i+j=sum

               found=True;#assign value True in boolean variable

               x=i;#defining a variable x that holds i value

               y=j;#defining a variable x that holds j value

               break;#use break keyword

       if(found==True):#defining if block that checks found equal to True

           print("(",x,",",y,")");#print value

       else:#defining else block

           print("Sorry there is no such pair of values.");#print message

Values=[3,8,13,2,17,18,10];#defining a list and assign Values

SUM=20;#defining SUM variable

FindPair(Values,SUM);#calling a method FindPair

Output:

please find the attachment:

Explanation:

In the above python code a method, "FindPair" is defined, which accepts a "list and SUM" variable in its parameter, inside the method "found" a boolean variable is defined, that holds a value "false".

Inside the method, two for loop is defined, that holds list element value, and in if block, it checks its added value is equal to the SUM. If the condition is true, it changes the boolean variable value and defines the "x,y" variable, that holds its value. In the next if the block, it checks the boolean variable value, if the condition is true, it will print the "x,y" value, otherwise, it will print a message.  

Adnan is creating a presentation about engineers using geometric shapes in bridge construction. He wants to insert
an illustration of a bridge saved in a folder on his computer.
How can he access the folder using the images command group?
After choosing the illustration he wants to add, which button should he click?
Add
Insert
OK
Done
Intro

Answers

Answer:Click Pictures, Insert

Explanation:

Got it right

Answer:

A. A

B. B

Explanation:

Hello, can you help me answer these questions?
1.How are machines located on the Internet?
2.What equipment allows data to be sent from the sender to the recipient over the Internet?
3.What is the name of the rules that standardize data exchange on the Internet and allow different hosts on the network to communicate?

Thank you in advance !

Answers

Answer:

Ans 1.To connect to the Internet and other computers on a network, a computer must have a NIC (network interface card) installed. A network cable plugged into the NIC on one end and plugged into a cable modem, DSL modem, router, or switch can allow a computer to access the Internet and connect to other computers.

Ans 2.Data travels across the internet in packets. Each packet can carry a maximum of 1,500 bytes. ... When you send an e-mail to someone, the message breaks up into packets that travel across the network. Different packets from the same message don't have to follow the same path.

Ans 3.protocol is a set of rules that governs the communications between computers on a network. A network protocol defines rules and conventions for communication between network devices.

Ans3 A protocol is a set of rules that governs the communications between computers on a network. A network protocol defines rules and conventions for communication between network devices.

Hope this fine

Pls Make me a brainlest

Answer:

This is basically how searches are made

This is a pretty detailed answer which I wrote in my own words so.... you might not understand fully also you might not get all the answers here. BUT I HOPE IT HELPS!!

Which genres of film would need the most work and input from a screenwriter? (Select all that apply).
a) action films
b) adventure films
c) comedies
d) nature documentaries

Answers

Answer:

action films

Explanation:

plz make me brainliest

Answer:

c and d may I have big brian plz

Explanation:

In the space below, explain how creating a multilevel list makes the Nutrients That the Human Body Needs information more readable.

Answers

Answer:

If you add a multilevel list the person or people reading the document know what protein does and it helps it look more readable.

Explanation:

Answer:

Lists allow you to emphasize important ideas. They also increase the readability of text by simplifying long sentences or paragraphs and adding aesthetic passive space to make reading more pleasant.

Explanation:

Which term describes a protocol to manage a network, able to configure a network, monitor activity, and control devices?

Post Office Protocol version 3 (POP 3)

Simple Mail Transfer Protocol (SMTP)

Internet Message Access Protocol (IMAP)

Simple Network Management Protocol (SNMP)

Answers

Answer:

Simple Network Management Protocol (SNMP)

Explanation:

Answer:

SNMP

Explanation:

vote brainliest please.

Which best describes a paraphrase?

Answers

to rewrite something , but in your own words

what do you mean by secondary memory ?

Answers

Answer:

The answer is a computer memory that is a non-volatile and persistent in nature and it's not directly accessed by a computer or a processer.

knowing a companys buisness standards will

Answers

Answer:

Imma say it will give you a better chance to reach those standards and get the job <3

Explanation:

Answer:

increase your ability to become enhanced at the job

Explanation:

Select the correct answer.
Samantha was calculating a mathematical formula on an electronic spreadsheet. She used multiple values to recalculate the formula. Where will
the CPU store data for easy access and quick retrieval during these computations?
A read-only memory
B.
random-access memory
C. hard disk
D.
compact disk

Answers

Answer:

The answer to this question is given below in the explanation section. However, the correct answer is B.

Explanation:

Samantha was calculating a mathematical formula on an electronic spreadsheet. She used multiple values to recalculate the formuls, CPU will store the data in random access memory for easy access and quick retrieval during these computations.

Because when CPU calculating or doing computation, it stores the data in RAM for easy access and retrieval and for fast computation.

However, it is noted that read-only memory is used only for reading information from memory. While hard disk and the compact disk is used for storing the data permanently.

Part of performing routine computer maintenance includes cleaning up after any spills. deleting Internet browsing history. removing the Internet connection. reinstalling faulty software programs.

Answers

Answer:

If I'm not wromg it would be B I'm not completely sure

The Part that is responsible for performing routine computer maintenance is deleting Internet browsing history.

What is Computer maintenance about?

Computer maintenance is known to be the act of keeping one's computers and laptops in good shape  via constant or regular cleanings, hard drive updates, and also a kind of virus prevention.

By doing so, one can prolong the lifespan of their devices and it can also help one browse safely on the web.

Conclusively, by the routine work of computer maintenance that involves deleting Internet browsing history, another person would not be able to access what you did on your internet history.

Learn more about computer maintenance from

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What statement best describes operating systems?
O It's possible for modern computers to function without operating systems.
O Most operating systems are free or very inexpensive.
Operating systems are managed by the computer's microprocessor (CPU).
O Operating systems manage the computer's random access memory (RAM).

Answers

Answer: D) Operating Systems manage the computer's random access memory (RAM)

Explanation:

It's not A because all modern computers use some form of an Operating System.

It's not B because some Operating Systems can cost hundreds of dollars.

While C has some truth to it, it's reversed. Operating Systems are there to manage and allocate system resources, and D is the better choice.

The statement that best describes operating systems is D. Operating systems manage the computer's random access memory (RAM).

Operating systems simply means the software which supports the basic functions of a computer like scheduling tasks and the control of peripherals.

An operating system is a system software that helps in managing computer hardware and software resources. It's vital in managing the computer's random access memory.

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Order the steps to take when drawing electron dot diagrams.


Count the dots to make sure that all of the valence electrons are represented. 1,2,3,4


Draw dots around the chemical symbol to represent the valence electrons of the atom.1,2,3,4


Use the periodic table to find the chemical symbol of the atom and the number of electrons in the valence shell. 1,2,3,4





write the chemical symbol of the atom. 1,2,3,4

Answers

Answer:

i just got to this question but the answers are

Explanation:

4

3

1

2

5. Question
Which one of these can connect directly to the Internet?

Answers

Answer: Clients

Explanation:

A Client refers to a computer that is able to connect to a server usually in a network in order to access the services provided by that server.

When a user tries to access the internet, the Client accesses the relevant server and requests the information that the user is requesting. The server then sends this to the client which then formats it in the way that the user can understand. The client is thus the direct connection to the internet.

This question is incomplete because it is lacking the necessary answer options, which I have provided below:

A. Servers.

B. Packets.

C. Internet users.

D. Clients.

So, given your question, the answer option which can connect directly to the Internet is: A. Servers.

A server refers to a specialized computer system that is designed and configured to provide specific remote services for its end users (clients), especially on a request basis.

In Computer and Technology, there are different types of server and these includes:

Print server.File server.Proxy server.Database server.Application server.Virtual server. Web server.

Basically, a server is typically designed and developed to connect directly to the Internet through the use of an intermediary network device such as a router or switch and a wired or wireless network connection.

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Can Anybody Answer This

Answers

Answer:

1 2 and 3 (A) give me brainiest

How would you monitor the performance of others that you have to lead

Answers

Answer:

Check over their progress daily.

Explanation:

Hope has now created her sublist. 1. Oxygen a. Helps living things produce energy b. Helps protect living things from harmful rays of the sun 2. Nitrogen a. Part of the muscles and organs of living things b. Part of substances that make living things function Hope wants to add a third use at the end of her nitrogen list. What should Hope do first? What is Hope's next step?

Answers

Too lazy to type it all out, C then B are correct.

Other Questions
Consider the equation, where p is a real number coefficient.- (px - 2) = 9What is the value of x in the equation? I need it done assap I will give brainliest!!! Which of the following would test positive in the Biuret test (for proteins), and negative in the Sudan Red test (for lipids/fats)?a. skim milkb. wheat breadc. meatloafd. vegetable oil ASSESSMENT QUESTIONS1. PART A: Which of the following identifies thecentral idea of the text?A Lincoln's tendency to change his opinionlost him the trust of a majority of theAmerican people.B While Lincoln passed the EmancipationProclamation primarily to weaken theSouth, his decision also created positivechanges for African Americans.C Lincoln earned the trust and respect of theAmerican people by sticking to his beliefsand decisions regardless of the advice hereceived.D Lincoln was in strong support of passing theEmancipation Proclamation, as he believedall men, regardless of race, were equal. Which sentence is a simple sentence? A. When the earthquake struck, the bed shook. B. The bed shook, for an earthquake had struck. C. The tremor from the earthquake caused the bed to shake. All of the following are reasons that psychologists use a systematic method to conduct research except __________. katie collected 470 cans the first week of the school project. The second week she collected 105 less than the first week. How many cans did she collect in the second week. 3. Three shrubs are kept at different humidity levels for a period of two weeks. At the endof two weeks we check to see how many leaves have developed on the plants.IV:DV:CV: What is the name of the bond that is created when two amino acids join?A. hydrogen bondB. nitrogen bondC. peptide bondD. ionic bond In which country, China or India, would you expect to encounter the most bureaucracy? Why? PLEASE HELP FAST PLEASE I BEG YOU Answer please please please!!! find the equation of the line that passes through (9,14) and is perpendicular to y= 1/3x-5 Write a memoir.You will submit a memoir of 500750 words. Your memoir must be about a personal experience that is important because of the reasons you acted, the actions you chose, or the consequences of your actions or choices.Before you submit your memoir, make sure youWrote a memoir that conveys meaning or emotion.Used first-person point of view.Included dialogue.Used descriptive language.Used chronological order.Wrote a conclusion that reflects on what you learned or why these events were important.You can make up a story but make it realistic Given that F(x) = x 2 + 2, evaluate F(1) + F(5). I need helpppp plssss Can an ordinary person be great? Why/why not? How the British made our trade become one-sided during ww1 Two angles are supplementary .One angle has a mesure 2 times the other angles. What are the measures of each angles The wheel barrow at rest containing stones has a force of 1000 N. A man exerted a push of 500 N.A.will he able to move the wheel barrow?B.suppose another man tried to help him and exerted a force of 500 N.will they able to move the wheel barrow?C.another man saw their struggle in pushing the wheel barrow.he tried to help them.he exerted force of 400 N.will the three of them move the wheel barrow?