what is tuple and attribute of a relation
Answers
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
hris has received an email that was entirely written using capitalization. He needs to paste this text into another document but also ensure that the capitalization is removed.
What should Chris do?
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What is the operating system written to, and what does nonvolatile mean?
Answers
Answer:
Non-volatile memory (NVM) is a type of memory that retains stored data after the power is turned off. Unlike volatile memory, it does not require an electric charge to maintain the storage state. Only reading and writing data to non-volatile memory requires power.
Que compone una maquina Rube Goldberg (operadores mecánicos- maquinas simples – mecanismos)
Answers
Answer:
dominoes, fans, PVC pipe, magnets, duct tape, marbles, cups or bowls, miniature toy cars, paper towel tubes, string.
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dominó, abanicos, tubos de PVC, imanes, cinta adhesiva, canicas, tazas o cuencos, carros de juguete en miniatura, tubos de toallas de papel, cuerdas.
Explanation:
Scrie un program care citind varstele a 2 copii afiseaza care dintre ei este cel mai mare si cu cat. Exemplu: Pentru varstele 5 si 9 se va afisa "al doilea copil e mai mare cu 4 ani"
Answers
Answer:
primul_copil = int(input("Introduceți vârsta primului copil: "))
aldoilea_copil = int(input("Introduceți vârsta celui de-al doilea copil: "))
def copilmai_mare(varsta1, varsta2):
if varsta1 > varsta2:
diferenta = varsta1 - varsta2
print("copilul mai mare este varsta1 cu diferența de vârstă de: ", diferenta )
else:
diferenta = varsta2 - varsta1
print("copilul mai mare este varsta2 cu diferența de vârstă de: ", diferenta )
copilmai_mare(primul_copil, aldoilea_copil)
Explanation:
Programul python de mai sus definește o funcție "copilmai_mare" care ia două argumente "varsta1" și "varsta2". Diferența dintre vârstele copiilor este comparată, iar cel mai mare copil și diferența sunt tipărite pe ecran.
Big Bob's Construction has many construction sites where computers are located. At the remote sites, Internet connectivity can be of poor quality and intermittent. Because the computers are onsite and have poor connectivity to the main office, they are not currently domain joined. However, they could be domain joined if required. You want to be able to manage the computers at the construction sites. Which technology can allow you to do this and not force users to reconnect constantly?
Answers
Answer:
WAN or wide area network using satellite
Explanation:
A WAN or wide area network is a network of local area networks that could span beyond a geographical region.
For a network administrator to manage the remote construction site, a stable network connection should be established using a wireless medium like a satellite to connect the site's network to the office network.
Benefits of donating computer equipment include Select all that apply. A. extending the useful ife of the device B. heiping someone who can't afford a new deviceC. keeping e-waste out of landfills D. avoiding having the device waste space in your homeloflice
Answers
Benefits of donating computer equipment include:
B. helping someone who can't afford a new deviceC. keeping e-waste out of landfills D. avoiding having the device waste space in your home officeWhat is a Donation?This refers to the term that is used to define the act of giving a thing out to someone else who usually needs it more as a form of helping them or emancipation.
Hence, it can be seen that when it comes to computer equipments, donations can be made and this helps the person to prevent e-waste and also help someone else.
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On larger computers such as servers, a volume can span multiple physical secondary storage devices.
a. true
b. false
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On larger computers such as servers, a volume can span multiple physical secondary storage devices is True.
What is a volume?A volume is a logical unit of storage that can be made up of multiple physical disks. This is often done on larger computers such as servers to increase the available storage space and improve performance. When a volume spans multiple disks, the data is striped across the disks, which can improve performance by spreading the read and write operations across multiple disks.
There are a number of different ways to create a volume that spans multiple disks. One common method is to use a RAID controller. A RAID controller is a hardware device that manages the disks in a RAID array.
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the process simulator does not allow you to revise and upload a new process model. question 9 options: true false
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True. The statement implies that once a process model has been uploaded to the process simulator, it cannot be revised or replaced with a new one.
Design, development, analysis, and optimization of technical processes such as chemical plants, chemical processes, environmental systems, power plants, complicated industrial operations, biological processes, and related technical functions are all done using process simulation.
Manufacturers can safely replicate extremely risky systems with the aid of process simulators. The dynamics in these virtual production environments behave exactly like those in the real world.
A simulation uses models to simulate how systems or processes in the real world work. While the simulation depicts how the model develops over time under various settings, the model describes the fundamental behaviors and features of the chosen process or system.
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A nested "if" statement only executes if the "if" statement in which it is nested evaluates to True. True False
Answers
The given statement "a nested "if" statement only has an impact if the "if" statement it is contained within evaluates to True" is TRUE.
What is a nested "if" statement?The use of nested IF functions, or one IF function inside another, increases the number of outcomes that may be tested and allows for the testing of numerous criteria.
Based on their performance, we wish to assign each student a grade.
Return an A if Bob's score in B2 is greater than or equal to 90.
Only if the "if" statement in which it is nested evaluates to True does a nested "if" statement take effect.
The OR function allows you to test many conditions in each IF function's logical test and returns TRUE if any (at least one) of the OR arguments evaluates to TRUE.
Therefore, the given statement "a nested "if" statement only has an impact if the "if" statement it is contained within evaluates to True" is TRUE.
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A ___ type presents a set of programmer-defined operations that are provided mutual exclusion within it.
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A "Mutex" type presents a set of programmer-defined operations that are provided mutual exclusion within it.
In computer science, a mutex, short for mutual exclusion, is a programming concept used to prevent two or more threads from executing a critical section of code simultaneously. A mutex provides a locking mechanism that allows only one thread to access a shared resource at a time, while other threads are blocked until the mutex is released.
Mutexes are commonly used in multithreaded programming environments to protect shared resources, such as global variables, from simultaneous access and modification by multiple threads. When a thread wants to access a shared resource, it must acquire the mutex associated with that resource. If the mutex is already held by another thread, the requesting thread will be blocked until the mutex is released.
Mutexes can be implemented using various techniques, such as semaphores or monitors, depending on the programming language and environment used. In addition to mutual exclusion, mutexes can also provide synchronization and communication between threads, allowing them to coordinate their activities and avoid race conditions.
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You are trying to sell a new product to a store owner. Which method of presentation is likely the most effective? a chart showing how sales will go up if they use this product a chart showing how sales will go up if they use this product quotes from other store owners on success of this product quotes from other store owners on success of this product a free trial option to use the product for six months, no questions asked a free trial option to use the product for six months, no questions asked all of the above
Answers
A method of presentation which is likely the most effective is: D. all of the above.
What is a product?A product can be defined as any physical object (tangible item) that is typically produced by a manufacturer so as to satisfy and meet the demands, needs or wants of every customer. Some examples of a product include the following:
Mobile phones or SmartphonesTelevisionMicrowave ovenPencilRefrigeratorComputerShampooDrugsWhat is a sales presentation?A sales presentation can be defined as an act that involves the process of speaking to customers and potential customers, so as to formally share and explain information about a product such as a health care plan, Medicare Advantage plan, etc., especially for the purpose of proffering a solution to a particular problem.
In conclusion, all of the above method of sales presentation would be very effective.
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The option to send a publication in an e-mail is available in the _____ tab.
File
Home
View
Review
Answers
Answer:
File
Explanation:
What keys are considered the "middle keys" on the keyboard?
Answers
Answer:
G and H.
Explanation:
This is due to their approximate location on the keyboard, which is directly between F and J, which have lines under them.
1 of 10 What information do banking institutions use to help detect fraudulent transactions? Historical transaction data 0 Internet search engine statistics Local business' sales forecasts National financial trends Submit Post-Assessment a 2 of 10 What layer of a decision tree tells you how a series of connected factors lead to a final outcome? The bottom layer Any layer with a threshold value over 5% Any layer with a threshold value over 15% The top layer Post-Assessment 3 of 10 Which is a tool can be used to automate the fraud detection process? O regression analysis confusion matrix logistic regression decision tree Submit Post-Assessment of 10 Which of these saves an institution time? Decision trees Fraud detection Confusion matrices Automated processes 9 Post-Assessment 5 of 10 Teaching an algorithm how to make decisions is known as training the model a decision tree identity fraud a confusion matrix Post-Assessment 6 of 10 Which of the following is not an example of fraud? Odata collection Odata visualization data breach c Both A and B 9 0 Post-Assessment 7 of 10 The value that decides whether something falls into one category or another is called a confusion matrix regression analysis logistic regression threshold ht Post-Assessment Bor 10 How is a confusion matrix used? To automate decision-making processes To verify the accuracy of a traud detection model Asa checklist to determine it a purchase is fraudulent As a checklist to determine a purchase is fraudulent g Post-Assessment 9 of 10 When should you use a confusion matrix? When you want to determine the value you should use as a threshold for your model When you want to automate a promess When you want to see if predictions made using logistic regression match actual outcomes When you want to create a decision tree Subm g Post-Assessment 10 of 10 What tool do data scientists use to examine the connections between variables? fraud detection decision trees confusion matrices O regression analysis Subs
Answers
1. A option is correct. historical transaction data
2. Any layer with threshold value above 15 % is the correct option
Answer:3. Decision tree
Answer:4. Automated process
5. Training the modle A option is the correct one
6. Both A and B
7. Threshold DD option is the correct option
8. As a checklist to determine if a purchase is fraduklent
9. C option is the correct option
10. Regression analyssis
What is the Intention of a Confusion Matrix in Machine Learning?
The goal of a confusion matrix in Machine Learning is to assess the competency of a classification model. It is a table used to gauge the correctness of the projections made by the model by contrasting the forecasted values against actual figures.
It demonstrates the amount of accurate positives, true negatives, false positives, and incorrect negatives, which are after then utilized to estimate various metrics like accuracy, recall, and the F1 score.
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What is the value of numC when this program is executed?
numA = 4
numB = 10
if numA == 2:
numC = 10
elif numA > numB:
numC = 20
else:
numC = 30
Answers
numA = 4 and numB = 10
for the if statement to run, numA has to equal 2, which it doesn't.
for the elif statement to run, numA has to be greater than numB, which it isn't.
That leaves the else statement, therefore, numC = 30
Answer:
30
Explanation:
define types of hacker ?plz help me with this question
Answers
Answer:
the types of hacker attacks and techniques. White Hat Hackers. Black Hat Hackers. Gray Hat Hackers. Script Kiddies.
Explanation:
i don't know if this can help you
Answer:
White Hat Hackers
Black Hat Hackers
Gray Hat Hackers
Script Kiddies
Green Hat Hackers
Blue Hat Hackers
Red Hat Hackers
State/Nation Sponsored Hackers
Hacktivist
Malicious insider or Whistleblower
How to break obsidian in Mine,craft?
Answers
Answer:
Obsidian is a very tough material to mine. One way to break obsidian is with a Diamond Pickaxe.
computational thinking is define as
Answers
Answer:
In education, computational thinking is a set of problem-solving methods that involve expressing problems and their solutions in ways that a computer could also execute.
Explanation:
Im just so smart. Just dont look at Wikipedia
what do you mean by automation and diligence with respect to a computer??
Answers
Answer:
Delegince computer without any motion resists
the ________ properties are defined in the class. group of answer choices fill strokewidth stroke centerx
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The properties "strokewidth," "stroke," "centerx" are defined in the class.
In the given context, it is mentioned that properties are defined in a class. A class is a blueprint for creating objects in object-oriented programming. Properties are attributes or variables associated with an object of a class.
Let's analyze the properties mentioned:
1. "strokewidth": This property defines the width of the stroke or line that can be applied to a graphical element, such as a shape or path.
2. "stroke": This property defines the color or style of the stroke or line applied to a graphical element.
3. "centerx": This property defines the x-coordinate of the center point of an object or shape. It represents the horizontal position of the object's center.
In the class definition, these properties are likely declared as variables or attributes with their respective data types and possibly initialized with default values. They can be accessed and modified by objects instantiated from the class.
The mentioned properties, namely "strokewidth," "stroke," and "centerx," are defined within the class. These properties represent different attributes associated with graphical elements, such as the width of the stroke, the stroke color or style, and the x-coordinate of the center point.
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____ characterized the period now known a Web 1. 0. Augmented reality
Social media network
Uer-generated content
Static web page
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Answer:
User- generated content is the finally answer
Which technological tool is important for storing critical files?.
Answers
The technological tools that can be considered important for storing critical files are battery backup systems and drives. These devices can be used to store data and supply energy.
Battery backup systemsA home battery backup system is a device used to keep the electrical system working in the event when the electrical source goes down.
In computation, there are three major classes of batteries systems: Lead-Acid, Nickel-Cadmium, and Lithium-Ion.
An uninterruptible power supply (UPS) can be considered as a battery backup supply capable of charging when the power is on.
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What will you see on the next line? >>> int(6.5)
Answers
Answer:
6
Explanation:
The int functions founds down to the nearest whole number, which in this case would be 6.
Answer:
6
Explanation:
An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees. What three network characteristics are described in this scenario
Answers
Answer: I gave 6 you can choose from.
Integrity
Scalability
Quality of Service
Fault of Tolerance
Powerline Networking
Security
Which increases the rate of soil formation?
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Answer: Increased temperature increases the rate of chemical reactions, which also increases soil formation. In warmer regions, plants and bacteria grow faster, which helps to weather material and produce soils. In tropical regions, where temperature and precipitation are consistently high, thick soils form.
Explanation: Hope this works
They are created from rocks (the parent material) by weathering and erosive forces of nature. Parent material is broken down by a variety of factors, including water, wind, gravity, temperature change, chemical reactions, living things, and pressure variations.
What are the factor involving in the formation of soil?Parent materials' rate of weathering and, consequently, soil characteristics like mineral composition and organic matter concentration are influenced by temperature and precipitation.
Faster plant and bacterial growth in warmer climates aids in the weathering of materials and the formation of soils. Thick soils develop in tropical areas where the temperature and precipitation are both constantly high.
Therefore, The rate of chemical reactions is accelerated by rising temperature, which also accelerates soil formation.
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adult t-cell leukemia is thought to be caused by multiple choice herpesviruses. retroviruses. parvoviruses. picornaviruses.
Answers
Adult T-cell leukemia (ATL) is thought to be caused by Retroviruses. Adult T-cell leukemia is a disease that affects mature T cells of the immune system, causing them to become cancerous. This malignancy is caused by the retrovirus HTLV-1.
Adult T-cell leukemia is an aggressive cancer that progresses rapidly, with symptoms and treatment options depending on the stage and severity of the disease.
Retroviruses are RNA viruses that use the enzyme reverse transcriptase to produce DNA from their RNA genome. The resulting viral DNA is incorporated into the host genome, where it can persist indefinitely.
HTLV-1 stands for human T-cell lymphotropic virus type 1. It is a retrovirus that infects human T cells, which are a type of immune cell. HTLV-1 is known to cause a number of diseases, including adult T-cell leukemia (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP).
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what is the name of the virus that appears to be a legitimate program but when opened, it can steal passwords or destroy data?
Answers
Answer: A Trojan Horse
Explanation: The name is based on the famous legend, where an army was granted access under the guise of being a safe and trustworthy entity.
PLEASE HELP! WILL GIVE BRAINLIEST
Answers
Answer:
Explanation:find out
I can't log in to my account! I've been trying for the past hour and the same error message pops up! I need to submit this before 5 PM so I don't get charged any late fees. What should you say?
A. "Do you usually get errors when you try to pay? Some people just have bad luck." B. "What error are you getting? That will help me determine if the problem is actually with the system." C. "Waiting until the last minute makes errors much more stressful. I'm sure we can fix this for you." D. "I'm sorry our system is making it hard for you to manage your account. What error message are you seeing?" E. 3"Setting up automatic payments helps prevent this problem. You might want to consider that for the future."
Answers
"I'm sorry our system is making it hard for you to manage your account. What error message are you seeing!" is the correct option.
When someone cannot log in to their account and gets an error message, the appropriate response is to acknowledge the user's issue and then inquire about the error message. This is best represented by option D, which is the correct answer.
Option A is not an appropriate response because it belittles the user's situation and is unprofessional. Option B is a good start, but it is lacking. It is necessary to follow up with something to help solve the issue.Option C is a good way to empathize with the user's situation, but it does not provide a helpful response to the problem.Option E is not relevant to the issue at hand because the user is already experiencing an issue. Furthermore, this option implies that the user did something incorrect, which may not be the case.Learn more about error message visit:
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Sarah has a class assignment to debate how globalization has impacted business organizations
Answers
Globalization pushes businesses to internationalize and significantly increase the number and variety of cross-border transactions in products, services, and capital.
What is globalization?The spread of financial products, goods, technology, information, and jobs across national borders and cultures is referred to as globalization. In economic terms, it refers to the interconnection of nations around the world produced by free trade.
Therefore, furthermore, globalization causes the quick dispersion and diffusion of products, technology, and knowledge around the world, regardless of origin.
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