A surrogate key is system-generated primary key that is usually hidden from the users.
Give me an example of what a surrogate key is.It can be said that if a table lacks a natural primary key, we must artificially generate one in order to uniquely identify a row in the database; this key is referred to as the surrogate key or synthetic primary key of the table. Surrogate keys aren't necessarily substitutes for the main ones, though.
A surrogate key in SQL is what?Describe the surrogate key. A column that contains a different identifier for each row is a surrogate key in a table. Not using the data in the table, the key is created. When creating data warehouse models, data modelers frequently generate surrogate keys on their tables.
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Coding problem! please check my work!
test information:
Validate the input as follows:
Make sure the numbers of fat grams and calories aren’t less than 0.
Ensure that the number of calories entered isn’t greater than fat grams x 9.
Once correct data has been entered, the program should calculate and display the percentage of calories that come from fat. Use the following formula:
Percentage of calories from fat = (Fat grams X 9) / calories
my coding: (note this is a false code for a test, NOT a real code!)
// start
Module Main ()
Declare Real fatGrams
Declare Real totalCalories
Declare Boolean fatCalories
//Get the number of fat grams
Display "Enter the number of fat grams."
Input fatGrams
While fatGrams < 0
Display "Error: the number of fat grams cannot be less than 0"
Display "Please enter the correct number of fat grams"
Input fatGrams
End while
//Get the number of calories
Display "Enter calories"
Input totalCalories
While totalCalories < 0
Display "Error: the number of calories cannot be less than 0"
Display"Please enter the correct number of calories"
Input totalCalories
End while
//Make sure the Calories isnt greater than 9 times the fat grams
While totalCalories > fatGrams*9
Display "Error: the number cannot be more than 9 times the fat grams"
Display "Please enter the correct number of calories"
Input totalCalories
End while
Call calculatedSum
End Module
//Get the percentage
Module calculatedSum
Set fatCalories=(fat grams*9) / calories
If fatcalories < 0.3 Then
Display "This food is low in fat"
Else
Display "this food is not low in fat"
End if
End Module
In the above code, There are a few issues with the provided code. Here are some of them:
The Declare Boolean fatCalories line should be Declare Real fatCalories.The fatCalories variable is not being used in the calculatedSum module. Instead, you are re-calculating the percentage of calories from fat. It would be more efficient to pass the value of fatCalories as an argument to the calculatedSum module, rather than recalculating it.In the calculatedSum module, the Set keyword should be replaced with fatCalories =.The If statement should compare fatCalories to the desired threshold (e.g. 0.3) using a comparison operator such as < or >. Currently, the If statement will always evaluate to false because fatCalories < 0.3 is an assignment statement.The Display statement inside the If block should use proper capitalization (e.g. "This food is low in fat" instead of "this food is low in fat").What is the Coding about?When the code above is revised, the new code will be:
// start Module Main ()
Declare Real fatGrams
Declare Real totalCalories
Declare Real fatCalories
// Get the number of fat grams
Display "Enter the number of fat grams."
Input fatGrams
While fatGrams < 0
Display "Error: the number of fat grams cannot be less than 0"
Display "Please enter the correct number of fat grams"
Input fatGrams
End while
// Get the number of calories
Display "Enter calories"
Input totalCalories
While totalCalories < 0
Display "Error: the number of calories cannot be less than 0"
Display "Please enter the correct number of calories"
Input totalCalories
End while
// Make sure the Calories isn't greater than 9 times the fat grams
While totalCalories > fatGrams * 9
Display "Error: the number cannot be more than 9 times the fat grams"
Display "Please enter the correct number of calories"
Input totalCalories
End while
fatCalories = (fatGrams * 9) / totalCalories
Call calculatedSum(fatCalories)
End Module
Module calculatedSum(Real fatCalories)
If fatCalories < 0.3 Then
Display "This food is low in fat"
Else
Display "This food is not low in fat"
End if
End Module
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On a systems sequence diagram, ____ indicate(s) a true/false condition.A) *
B) [ ]
C) { }
D) ( )
[] represents a true/false condition on a systems sequence diagram.
On a systems flow diagram, what does the letter S stand for when a condition is true or false?True or false conditions are indicated by brackets []. Describe the parameters of a message. displays the data that was sent along with the message. The many interactions between the various model pieces are depicted in interaction diagrams. This interaction therefore forms an element of the system's dynamic behavior.
What does a system flow diagram display?In the discipline of software engineering, a sequence diagram (SSD) depicts process interactions grouped in chronological order. The functionality is carried out by the processes that are shown along with the order in which they exchange messages.
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Codehs computer science problem:
We are going to use the Student class that we completed in the last exercise and add a new SchoolClub class. Start by adding your Student class from the last exercise.
After that, add the constructor for the SchoolClub class. For this class, your constructor should take a Student object for the leader and a String club name (in that order). You should also initialize the number of members at zero in the constructor.
Test your code with the StudentTester class. This is the same as the last exercise, so you will need to add a statement to a club and then print it out.
Here is an example of the SchoolClub class implemented with a Student class:
class Student {
private:
string name;
int grade;
public:
Student(string name, int grade) {
this->name = name;
this->grade = grade;
}
string getName() {
return name;
}
int getGrade() {
return grade;
}
};
class SchoolClub {
private:
Student leader;
string clubName;
int numMembers;
public:
SchoolClub(Student leader, string clubName) {
this->leader = leader;
this->clubName = clubName;
this->numMembers = 0;
}
Student getLeader() {
return leader;
}
string getClubName() {
return clubName;
}
int getNumMembers() {
return numMembers;
}
void addMember() {
numMembers++;
}
};
int main() {
Student leader("John", 10);
SchoolClub club(leader, "Chess Club");
club.addMember();
club.addMember();
cout << club.getClubName() << " led by " << club.getLeader().getName() << " has " << club.getNumMembers() << " members." << endl;
return 0;
}
In this code, the SchoolClub class has a constructor that takes in a Student object for the leader and a string for the club name. It also initializes the number of members to zero. The class also has methods to get the leader of the club, the club name and the number of members. In the main method, the code creates a Student object for the leader and a SchoolClub object with the leader and club name. The club object is then used to add members and get information about the club.
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53.8% complete question which redundant array of independent disks (raid) combines mirroring and striping and improves performance or redundancy?
RAID 1+0, also known as RAID 10, combines mirroring and striping to improve both performance and redundancy.
What exactly is RAID?
RAID (Redundant Array of Independent Disks) is a technology that uses multiple physical disk drives to create a single logical storage unit. It provides improved data integrity and performance by distributing data across multiple disks, and can also provide data redundancy in the event of a disk failure.
There are several different RAID levels, each with its own set of advantages and disadvantages, such as RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 etc.
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the requirement to keep information private or secret is the definition of __________.
Answer:
Confidentiality
Explanation:
when you keep something a secret, it is confidential
Where are frequently used apps pinned for easy access?
a. To the menu
b. To the ribbon
c. To the taskbar
Press and hold (or right-click) an app in the Start menu or applications list, then, if available, choose Pin to taskbar. Press and hold (or right-click) an app in the Start menu or applications list, then choose More > Pin to taskbar.
Pin to start: What does that mean?What does "Pin to Start" do, though Let's imagine you wish to add a software or app to Windows 10's Start Menu. It can be added by simply clicking the "Pin to Start" option. Pinning is the process of putting a Windows 10 app to the Start Menu.
Why would someone use a PIN?For electronic financial operations like debit card purchases and other types of online payments, a personal identification number (PIN) is a numerical code.
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all queries with a user location have both visit-in-person and non-visit-in-person intent. T/F
TRUE : There are two types of intent for every query with a user location: non-visit in person and visit in person.
Define the term user location?User Location refers to a physical location that You have given permission to use a Service for which you have paid a subscription (or, in the case of any services provided by Us without charge, for which a service has been provisioned).
Location Access is the legal right to grant third parties access to fiber optic facilities and services at a Location, whether they are dark or lit, under the conditions outlined in the Location Access Agreement.Search engine is now paying more attention to user location and the role it plays in determining intent. This also implies that local search engines now play a bigger role than ever.Visit-in-Person Queries: Visit-in-person queries imply that a user is looking for information in order to visit a site. This is the purpose of some local queries, but not all of them.Some, like "post offices," "restaurants," or "book stores," serve both in-person visits and out-of-person visits.To know more about the user location, here
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_______ is a technique for harnessing the power of thousands of computers working in parallel.
a. Granularity
b. RFM analysis
c. Reposition
d. MapReduce
A method for utilizing the power of numerous computers running in parallel is called map reduce.
What do you mean utilizing?
Use, employ, and utilize all refer to placing into service, particularly to achieve a purpose. Use refers to making use of something as a tool or a means to an end. eager to employ any strategy to further her goals. Employ implies making use of something or someone who is on hand but not using it.
Use, employ, and utilize all mean to put to use, particularly to achieve a goal.
Using something as a tool or a means to an end is implied by the verb USE.
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To be considered high quality, data must have all of the following characteristics except _______.
A. competitiveness
B. relevancy
C. timeliness
D. worth its cost
E. accuracy
Answer:
A: Competitiveness
Explanation:
Data can't be competitive
Lab-Related Assignment
1. You can troubleshoot a failed Windows startup/boot-up by pressing the F8 key to take you to the Advanced Boots Option Screen for more options as the system reboots. After exhausting most of the options there without success in resolving the boot issue, you decide to revert to a previously good working system configuration by choosing the Last Known Good Configuration (Advanced) option. Described the implications of doing so. Explain why it is sometimes necessary to open the command prompt with administrative privileges.
Non-Lab Assignment
2. The event viewer is a built-in tool in Windows systems for diagnosing system issues. Identify one of the errors shown on the Event Viewer Log (view the example file in the Resources) and suggest a possible reason for it. Assume the source of the error that you identified is correct, suggest a series of steps that you would undertake to further investigate and address the problem. State any assumptions you need to make as you step through your troubleshooting process.
Will use LKGC to stand for Last Known Good Configuration. Consequences of selecting the Last Known Good Configuration (LKGC).This stops other users from tampering with the computer and carrying out actions.
Why is it occasionally essential to run the command prompt with administrative rights?The only users who should be given administrative rights are those who can be trusted. This stops other users from tampering with the computer and carrying out actions like removing software you require, installing applications you don't want, or altering crucial files. From a security perspective, this is helpful.
What purpose does the administrator Command Prompt serve?The Windows operating system's command prompt (cmd) provides a command-line interface for entering and executing commands. You may occasionally need to do a task that calls for administrator rights. Open cmd as an administrator expressly for that purpose.
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What is the first step of requirement elicitation ?a) Identifying Stakeholderb) Listing out Requirementsc) Requirements Gatheringd) All of the mentioned
Stakeholders are the one who will invest in and use the product, so its essential to chalk out stakeholders first.
What is requirement elicitation?Needs elicitation is the activity of studying and finding system requirements from users, customers, and other stakeholders in requirements engineering. The procedure is also known as "requirement gathering" at times. The process of engaging and cooperating with key stakeholders to gather information and define the project's needs is known as requirement elicitation. Interviews, surveys, user observation, workshops, brainstorming, use cases, role acting, and prototyping are all methods for eliciting requirements. An elicitation procedure is required before needs can be studied, modeled, or described.
Here,
Because stakeholders are the ones who will invest in and utilize the product, it is critical to identify stakeholders initially.
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____tag enables you to apply the style on a single character, word or group of words.a) b) c)
a keyboard access key is assigned to a button using the button control's ________ property.
The text attribute of the button control is used to assign a keyboard shortcut to a button.
What are the three primary keyboard types?The numerous kinds of computer keyboards that users generally use for varied tasks include qwerty keyboards, gaming keyboards, virtual keyboards, and multimedia keyboards.
Is it possible to learn how to play the keyboard independently?Absolutely. Having a good traditional teacher can undoubtedly be beneficial, but you can teach yourself how to play the piano or keyboard extremely successfully with the Musiah digital piano lesson courses, and you can do either with or without the assistance of a traditional piano or keyboard teacher.
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the ________ operator is used in c++ to test for equality.
If the values of both operands match, the equal-to operator (==) returns true; otherwise, it returns false. the operator not-equal-to.
In C, what is a relational operator?
The relationship between two operands is verified by a relational operator. It yields 1 if the connection is true and 0 if the relation is false. Decision-making and looping both require relational operators.
What do C's relational and logical operators do?
When comparing values, relational operations yield either TRUE or FALSE. On TRUE and FALSE, logical operators apply logical operations. Prior to being evaluated, values used with a logical operator are transformed into booleans.
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the base class's ________ affects the way its members are inherited by the derived class.
Group of answer choices
A.return data type
B. name
C.construction
D. access specification
E. None of these
The base class's access specification affects the way its members are inherited by the derived class. The correct option is D.
What is access specification?When a class is defined to derive from another class, all of the base class's members—aside from its constructors and finalizers—are automatically added to the derived class.
Without having to reimplement anything, the derived class makes use of the code from the base class. The derived class can have more members added to it. A member function of a base class that can be redefined by a derived class is known as a virtual function.
Therefore, the correct option is the D. access specification.
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Technician a says low fluid level in the master cylinder reservoir indicates a leak in the system.
Technician A says the low fluid level in the master cylinder reservoir indicates a leak in the system. Technician B says for both drum and disc brakes, the friction material rotates with the wheel. Both A and B are correct.
Who is a technician?A technician is a person who knows the technicality of machines and other things, They can repair these things.
These rubber rings prevent hydraulic fluid from escaping and keep it free of moisture and impurities. They also cause the piston to return to its off position, allowing the brake pads to disengage correctly when the brake pedal is released.
Therefore, the correct option is c, Both A and B.
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The question is incomplete. Your most probably complete question is given below:
Technician B says for both drum and disc brakes, the friction material rotates with the wheel.
Who is right?
Select the correct option and click NEXT
O A only
B only
Both A and B
Neither A nor B
when they have the same name, variables within ____ of a class override the class’s fields.
Answer: methods
Explanation:
Using technology, calculate the weighted mean of the rors for each portfolio. Based on the results, which list shows a comparison of the overall performance of the portfolios, from best to worst?.
Option B is the best option. Based on the data, the following list analyzes the total performance of the portfolios, rating them from best to worst:
Portfolios 2, 3, and 1, in that order.
The weighted average ROR is determined by summing the asset return rates and the percentage of the portfolio invested in each investment.
Portfolio No. 1:
$700 + $2575 + $220 + $1000 + $1430 = $5925 Total Investment
As a result, the total investment is $5,925.
Weighted Average ROR= (-3.8% * $700) / $5925 + (2.1% * $2575) / $5925 + (11.3% * $220) / $5925 + (5.8% * $1000) / $5925 + (1.6% * $1430) / $5925 + (5.8% * $1000) / $5925 + (1.6% * $1430) / $5925 + (5.8% * $1000)
WAROR = (-0.0045) + 0.0091 + 0.0042 + 0.0098 + 0.0039 = 0.0225
As a result, the Weighted Average ROR is 2.25%. (third)
Portfolio No. 2:
$1250 + $1700 + $1515 + $1345 + $1,675 = $7485 Total Investment
As a result, the total investment is $7,485
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pop3 (post office protocol, version 3) relies on tcp and operates over port ____.
POP3 services or Post Office Protocol version 3 operate over port 110.
What is POP3 services?POP3 or Post Office Protocol version 3 define as an older protocol which was originally purposed to be used on only one computer. Far apart from modern protocols which use two-way synchronization, POP3 services only provide one-way email synchronization which mean POP3 only allowing users to download emails from server to client. POP3 works by executes the download and delete operations for messages in the server. So, when a client using POP3 services connects to the server. It takes all messages from the server mailbox.
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the pointing device most likely to be found on a notebook computer is a(n) ____.
The computer mouse is the most used pointing device for desktop computers. The touchpad is the most popular pointing device for laptop computers.
What kind of object is a pointing device?The principal pointing device for desktop computers is the mouse, while the primary pointing device for laptops is the touchpad, despite the fact that many road warriors carry a mouse. A very small percentage of users prefer trackballs to mice when using computers that have pointing devices. see trackball, mouse, touchpad, pointing stick, and more.
Which of the following can you use as a pointing device in place of a mouse?A touchpad or trackpad is a flat surface that responds to finger contact. On laptop computers, this kind of stationary pointer is typical. least one Although there is usually a physical button on the touchpad, users can also tap the pad to mimic a mouse click.
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which windows 7 window can be used to get a report of the history of problems on a computer?
Answer:
Event viewer
Explanation:
Event Viewer is a application that contains all of the errors from the system and installed applications. although most of the errors can be ignored, you can use the information contained in the application to maybe get some more information on a problem
a(n) ____ field is a field that can be computed from other fields.
A field that can be determined from other fields is referred to as a calculated field.
What is a field in a data type?Think of a field's data type as a set of properties that are applicable to each and every value that is put in the field. For instance, only letters, integers, and a limited amount of punctuation characters are permitted in text field data, and a text field can carry a maximum of 255 characters.
Do fields count as database columns?In a table, a column is a row of cells stacked vertically. A field is an element that, like the receiving field, only holds one piece of data. A table's columns typically contain the values for a single field.
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Average=78
print(Average)
print(‘Average’)
Write the output of above 2 statements.
The output for print(Average) will be 78, and for print(‘Average’) is Average.
What is print function?The print() function outputs the message to the normal output device, such as the screen. The message can be a string or any other object, and before it is displayed on the screen, the object will be changed into a string.
A prepared string is sent to the standard output using the printf() function (the display). Printing the average will produce the output 78, whereas printing the average in second scenario will produce Average.
Thus, this will be the output for the given scenario.
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Pinterest is an example of a(n) _______________.A. research and content managerB. media curation siteC desktop search engineD.bookmarking siteE.enterprise search engine
Pinterest is an example of a media curation site. The correct option is B.
What is media curation site?Finding and gathering internet content, then selecting the best parts to present in a systematic way, is the process of content curation.
Curation does not entail producing your own material, as contrast to content marketing.
Pinterest is an American social media platform and image-sharing platform that lets users create pinboards using photographs, videos, and, to a lesser extent, animated GIFs to save and organize information online.
Thus, the correct option is B.
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the ________ approach is the classical process used to develop information systems.
The standard development procedure for information systems is called as systems development life cycle (SDLC) approach.
Define the term systems development life cycle (SDLC)?A conceptual model for project management known as the systems development life cycle (SDLC) details the phases of an information system development project, first from early phase of a feasibility study to the ongoing maintenance of the finished application.
The entire process of creating software or information systems is known as the Systems Development Lifecycle (SDLC). Planning, Analysis, Designing, Development, Tests, Implementation, and Maintenance are the seven primary phases of the SDLC.An SDLC methodology's main goal is to give IT project managers the tools they need to assure the effective implementation new systems that meet the strategic and operational goals of the university.The most important phase of the SDLC is requirements analysis and gathering. No development team can produce a customer-appreciated solution without comprehending the needs.Thus, the standard development procedure for information systems is called as systems development life cycle (SDLC) approach.
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what mechanism will you choose when you need to ensure the integrity of your data?
Error checking and validation are typical techniques for guaranteeing data integrity as part of a process. Even malicious checksum forgery could be detected by cryptographic hash algorithms.
Data integrity problems at the file or block level can be found using methods like mirroring, parity, or checksumming.
Data accuracy, completeness, and consistency are all aspects of data integrity. The phrase "data integrity" is widely used to describe both data security and legal compliance, especially GDPR compliance. It is upheld by a set of policies, rules, and guidelines that were established during the design phase. Information stored in a database will continue to be accurate, comprehensive, and reliable no matter how long it is kept or how often it is accessed if the integrity of the data is protected.
The importance of data integrity in preventing data loss or a data leak cannot be overstated: in order to protect your data from harmful external influences, you must first ensure that internal users are handling it properly by putting the required data validation in place.
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Error checking and validation mechanism will you choose when you need to ensure the integrity of your data.
What does data integrity mean in a security system?
Data accuracy and consistency (validity) throughout a data's lifecycle are referred to as data integrity. After all, compromised data is of limited use to businesses, not to mention the risks associated with losing sensitive data. Since ensuring data integrity is crucial to many enterprise security solutions, it follows that it should be a primary concern.
What technique is employed to ensure data integrity?
Most often, a database system's integrity constraints or rules are used to enforce data integrity. The relational data model naturally includes three different forms of integrity constraints: entity integrity, referential integrity, and domain integrity.
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3-3 Assignment: Introduction to Pseudocode and Flowcharts
The answer provided below has been developed in a clear step by step manner.
Write about pseudocode.Pseudocode is a made-up, informal language that helps programmers create techniques. Pseudocode is a detailed, "text-based" (algorithmic) design. The Pseudocode rules aren't too challenging to comprehend. All words indicating "dependency" must be indented. While, do, for, if, and switch are a few of these.
Step: 1
Calculating an individual's biweekly compensation using fictitious code
Times - The total duration a worker works each week as an input
Efficiency: earnings - The individual's pay dependent on the amount of number of hours
Explanation:
This assembly language aids in calculating a worker's weekly wage determined by the number of hours they put in. The hourly rate is $20. Over 40 hours, you receive $30 for every second you work.
Step: 2
Calculating an individual's biweekly compensation using fictitious code
Times - The total duration a worker works each week as an input
Efficiency: earnings - The individual's pay dependent on the amount of number of hours
This assembly language aids in calculating a worker's weekly wage determined by the number of hours they put in. The hourly rate is $20. Over 40 hours, you receive $30 for every second you work.
Starting
Download time
If (h > 40)
payments are calculated as hours*40 plus (hours*40)*30.
Else
salary calculation: 40 * 20
End If
Printing pay
End
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________ is a set of function and call programs that allow clients and servers to intercommunicate.
Answer:
A protocol is a set of function and call programs that allow clients and servers to intercommunicate.
the shaded space between the first and second pages of a document indicates a ____ break.
a. line
b. paragraph
c. page
d. document
A line break is indicated by the shaded area between the first and second pages of a document. As you enter text into a document, Word paginates it automatically. if a paragraph is too long for a page.
What is indicated example?
Indicated is described as having demonstrated, highlighted, or demonstrated the need for. To have pointed out the parkway to a lost traveller is an example of having indicated. YourDictionary. Simple past tense and indicate's past tense. When you point to something or indicate something to someone, you are essentially showing them where it is. He pointed to a chair. There is a 3,000-foot depth here, according to our records. The location of the hidden treasure is shown on the map. Nothing suggests a connection between the two incidents. His hefty bid shows how keen he is to purchase the house.
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________ shrinks the width and height of the printed worksheet to fit a maximum number of pages.
Excel commands that let you adjust the width, height, or both of printed output to suit the most number of pages possible include: Size to Fit
What is a worksheet?A group of cells arranged in rows and columns is referred to as a worksheet in Excel documents.
It is the work surface that you use to input data.
Each worksheet functions as a massive table for organizing data with 1048576 rows and 16384 columns.
A workbook typically has numerous worksheets with connected content, but only one of them is open at any given moment.
Each worksheet contains a sizable number of cells that can be formatted and given values. Worksheet cells can be added, changed, and deleted using the Cells property.
Hence, Excel commands that let you adjust the width, height, or both of printed output to suit the most number of pages possible include: Size to Fit.
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