Which of the following meanings of the plus sign, +, are built-in to the language (and/or standard libraries or classes that we have been using with the language)?
A. Numeric subtraction
B. Numeric addition
C. string concatenation
D. The logical "or" operation
Answers
Answer:
Numeric Addition
Explanation:
Literally, the + sign is an arithmetic operator used to perform addition operation between numeric datatypes (integer, float, decimal, double, long integer, etc...)
Its default built in function of the plus is sign is to add variables, constants and/or expressions.
The plus sign is used as follows;
a = 5;
b = 3;
c = a + b
-------------
a + b = 5 + 3 = 8
8 will be saved in variable c. This is only possible using the plus sign.
The plus sign also has other function such as string concatenation but this function is language dependent (i.e. some programming languages do not use + for string concatenation).
Conclusively, the built in function of the plus sign is for numeric addition
Related Questions
I would like assistance on writing a c++ program without using double. Thank you
Answers
Here is the corrected code:
function convertTime() {
let hours, minutes, ampm;
let military = prompt("Enter military time (hh:mm):");
// Verify input is a valid military time
if (!/^\d{2}:\d{2}$/.test(military)) {
alert(military + " is not a valid time.");
return;
}
// Parse hours and minutes
hours = parseInt(military.split(":")[0]);
minutes = parseInt(military.split(":")[1]);
// Convert to 12-hour format
if (hours == 0) {
hours = 12;
ampm = "AM";
} else if (hours < 12) {
ampm = "AM";
} else if (hours == 12) {
ampm = "PM";
} else {
hours = hours - 12;
ampm = "PM";
}
// Output the converted time
let standard = hours.toString().padStart(2, "0") + ":" + minutes.toString().padStart(2, "0") + " " + ampm;
alert("Standard time: " + standard);
// Ask if the user wants to convert another time
let repeat = prompt("Would you like to convert another time? (y/n)").toLowerCase();
if (repeat == "y") {
convertTime();
}
}
convertTime();
Which tool adds different amazing effects to a picture.
(a) Paint
(b) Lines tool
(c) Magic tool
Answers
Answer:
magic tool
Explanation:
Write a Java program that will be using the string that the user input. That string will be used as a screen
saver with a panel background color BLACK. The panel will be of a size of 500 pixels wide and 500 pixels in
height. The text will be changing color and position every 50 milliseconds. You need to have a variable
iterator that will be used to decrease the RGB color depending on if it is 0 for Red, 1 for Green, or 2 for Blue,
in multiples of 5. The initial color should be the combination for 255, 255, 255 for RGB. The text to display
should include the Red, Green, and Blue values. The initial position of the string will be the bottom right of
the panel and has to go moving towards the top left corner of the panel.
Answers
Using the knowledge in computational language in JAVA it is possible to write a code that string will be used as a screen saver with a panel background color BLACK.
Writting the code:import java.awt.*;
import java.util.*;
import javax.swing.JFrame;
class ScreenSaver
{
public static void main( String args[] )
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter a name you want add as a Screen_saver:");
String s=sc.nextLine(); //read input
sc.close();
JFrame frame = new JFrame( " Name ScreenSaver " );
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
JPanalSaver saver1JPanel = new JPanalSaver(s);
saver1JPanel.setPreferredSize(new Dimension(500,500));
frame.add( saver1JPanel );
frame.setSize( 500, 500 ); // set the frame size (if panel size is not equal to frame size, text will not go to top left corner)
frame.setVisible( true ); // displaying frame
}
}
JPanalSaver.java
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JPanel;
public class JPanalSaver extends JPanel {
int x1 = 500, y1 = 500;
int r = 255, g1 = 255, b = 255;
String color;
int iterator = 0;
JPanalSaver(String c) {
color = c;
}
public void paintComponent(Graphics g) {
super.paintComponent(g); // call super class's paintComponent
x1 = x1 - 5;
y1 = y1 - 5;
if (iterator ==0) {
r = Math.abs((r - 5) % 255);
iterator = 1;
} else if (iterator == 1) {
g1 = Math.abs((g1 - 5) % 255);
iterator = 2;
} else {
b = Math.abs((b - 5) % 255);
iterator = 0;
}
g.setColor(new Color(r, g1, b));
g.drawString(color + " " + r + " " + g1 + " " + b, x1, y1); //string + value of RGB
//top left position (0,0 will not display the data, hence used 5,10)
if (x1 > 5 && y1 > 10)
{
repaint(); // repaint component
try {
Thread.sleep(50);
} catch (InterruptedException e) {
} //50 milliseconds sleep
} else
return;
}
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what is the role of the operating system
Answers
Bit rate is a measure of how many bits of data are transmitted per second. Compared to videos with a higher bit rate, the same videos with a lower bit rate would most likely have
a 3D effect.
blocky, pixilated motion.
a larger file size.
a smoother flow of motion.
Answers
A lower bit rate means that fewer bits of data are transmitted per second, resulting in a lower quality video
What does this mean?A decreased bit rate signifies that a smaller quantity of bits are sent each second, leading to a lower-caliber video. Videos with a minor bit rate usually feature choppy, pixelated motion garnered due to the compression of the footage.
This compression detracts from the amount of information transported, causing a decrease in detail and definition. Alternatively, videos possessing an advanced bit rate would encompass larger documents and a more continuous succession of motion, given that more data is disseminated per second - thereby making for a higher quality video. The increased bit rate enables for increased clarity as well as improved resolution to be persisted within the clip.
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1) If it takes your computer 2 hours to complete a process requiring 3TB of memory, how fast is your dada processing speed in KB per second
2) You are comparing two computerized devices to determine which to buy. You like downloading 30 MB songs. How many full songs will a device with 8GB storage hold
we are supposed to use the cancelling method thing or whatever
Kilobyte=KB=1024 bytes
megabyte=MB=1024 KB
gigabye=GB=1024 MB
terabyte=TB=1024 GB
Answers
If it takes a computer 2 hours to complete a process requiring 3TB of memory, the data processing speed in KB per second is: 416667KB/Second.
What is the justification for the above answer?Since our answer must be in KB/Sec, hence we first convert our data in to KB and Seconds.
Given the above conversion table,
3TB = 3 x 10⁹ or 3000000000 kb
2 hours = 7200 seconds
Hence,
Processing speed in KB/sec
= 3000000000/ 7200
= 416666.666667
\($\approx$\) 416667KB/Second
If one likes downloading 30 MB songs. How many full songs will a device with 8GB storage hold?8GB = 8000megabyts
Hence,
a device with 8,000 megabytes will contain:
8000/30
= 266 songs.
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Excel
Please explain why we use charts and what charts help us to identify.
Please explain why it is important to select the correct data when creating a chart.
Answers
1) We use chart for Visual representation, Data analysis, Effective communication and Decision-making.
2. It is important to select the correct data when creating a chart Accuracy, Credibility, Clarity and Relevance.
Why is necessary to select the correct data in chart creation?Accuracy: Selecting the right data ensures that the chart accurately represents the information you want to convey. Incorrect data can lead to misleading or incorrect conclusions.
Relevance: Choosing the appropriate data ensures that your chart focuses on the relevant variables and relationships, making it more useful for analysis and decision-making.
Clarity: Including unnecessary or irrelevant data can clutter the chart and make it difficult to interpret. Selecting the correct data helps to maintain clarity and simplicity in the chart's presentation.
Credibility: Using accurate and relevant data in your charts helps to establish credibility and trust with your audience, as it demonstrates a thorough understanding of the subject matter and attention to detail.
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In C language. Print numbers 0, 1, 2, ..., userNum as shown, with each number indented by that number of spaces. For each printed line, print the
leading spaces, then the number, and then a newline. Hint: Use i and j as loop variables (initialize i and j explicitly). Note: Avoid any
other spaces like spaces after the printed number. Ex: userNum = 3 prints:
Answers
The program uses loops to print the numbers from 0 to the user input.
It also uses loops to print the indented space before each iteration value.
The program in C where comments are used to explain each line is as follows:
#include <stdio.h>
int main(){
//This declares userNum as integer
int userNum;
//This gets input for userNum from the user
scanf("%d",&userNum);
//This iterates through from 0 to userNum
for (int i = 0; i <= userNum; i++ ) {
//This iterates from 0 to current iteration value
for (int j = 0; j < i; j++ ) {
//This prints the indents
printf(" "); }
//This prints the current iteration value
printf("%d\n",i); }
}//The program ends here
At the end of the program, the program outputs the indent, followed by the iteration value and a new line.
See attachment for the program sample run
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(5) Add the following two binary numbers together. Take that result, and XOR it with the shown binary number. Then take those results, and NOR it together with the last binary number. (40 pts.) please show the steps
Step 1: 1001101 + 1010
Step 2: XOR 1011001
Step 3: NOR 110110
Answers
Answer:
Here are the steps to solve the problem:
Step 1: 1001101 + 1010 To add these two binary numbers together, we need to align them by their least significant bit (rightmost bit) and then add them column by column:
1001101
+ 1010
--------
1011001
Copy
So the result of step 1 is 1011001.
Step 2: XOR 1011001 To XOR two binary numbers, we compare their bits column by column. If the bits are the same (both 0 or both 1), the result is 0. If the bits are different (one is 0 and the other is 1), the result is 1:
1011001
^ 1011001
--------
0000000
Copy
So the result of step 2 is 0000000.
Step 3: NOR 110110 To NOR two binary numbers, we first OR them and then NOT the result. To OR two binary numbers, we compare their bits column by column. If at least one of the bits is 1, the result is 1. If both bits are 0, the result is 0. To NOT a binary number, we flip all its bits (0 becomes 1 and vice versa):
OR:
0000000
| 110110
--------
110110
NOT:
~110110
--------
001001
So, the final result of step 3 is 001001.
Select the trait that best matches the description.
is the willingness to put a customer's needs above one's own needs and
to go beyond a job description to achieve customer satisfaction.
is the ability to make decisions based on logic instead of emotions.
M is the ability to cope during periods of stress,
is the willingness to have new and varied experiences.
Answers
Answer:1Customer service orientation
2Tough mindedness
3Emotional resilience
4Openness
Explanation:I did the assignment and got it right
Research statistics related to your use of the Internet. Compare your usage with the general statistics.
Explain the insight and knowledge gained from digitally processed data by developing graphic (table, diagram, chart) to communicate your information.
Add informational notes to your graphic so that they describe the computations shown in your visualization with accurate and precise language or notations, as well as explain the results of your research within its correct context.
The statistics and research you analyzed are not accomplished in isolation. The Internet allows for information and data to be shared and analyzed by individuals at different locations.
Write an essay to explain the research behind the graphic you develop. In that essay, explain how individuals collaborated when processing information to gain insight and knowledge.
Answers
By providing it with a visual context via maps or graphs, data visualization helps us understand what the information means.
What is a map?The term map is having been described as they have a scale in It's as we call the longitude and latitude as well as we see there are different types of things are being different things are also in it as we see there are different things are being there in it as we see the oceans are there the roads and in it.
In the US, 84% of adults between the ages of 18 and 29, 81% between the ages of 30-49, 73% between the ages of 60 and 64, and 45% between the ages of 65 and above use social media regularly. On average, users use social media for two hours and 25 minutes each day.
Therefore, In a visual context maps or graphs, and data visualization helps us understand what the information means.
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Meaning of learning application software, meaning of Achitertoral /Engineering application software , meaning of Entertainment application software
Answers
Computer software is referred as a programming code executed on a computer processor. It can be machine-level code or written code for an operating system.
Meaning of given terms:
Learning application software: It can help you in gaining new skills, provide you with proper instructions and even make you continuously learn in different criteria and subjects.
It makes the study more easy , quicker as well as provide continuous assessment to children.
It include Moodle, Blackboard learn etc
Architectural software : It can help in designing, visualizing various formats of given work. From planning homes, to mansions it can provide and turn vision into reality.
It includes AUTOCAD, Sketchup
Entertainment Software: It provides amusement and opportunities for leisure activities. It help in relaxing, enjoying and escaping from the different situations.
It includes Netflix, amazon and Kodi.
Therefore every term has been described.
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What is one reason that many older PC games, when run on modern hardware, will run at high speeds? Include discussions of frame rates and refresh rates in your answer and how toggling these settings might fix the problem (for example, by turning on V-sync in a game’s settings).
Answers
Answer:
Yes, mainly due to the changes in Windows operating system, hardware, and/or drivers. For example, I own old games that only runs on the defunct 3dfx graphic chipsets. Despite Nvidia acquiring them, they didn't embed any 3dfx code. So running those games today would require you to use a 3dfx Glide wrapper since no card today can run that natively. Explanation:
CCFL (cold cathode fluorescent lamps) back-light is the light technology that is used in the displays of the devices like LCD TV, LCD monitor etc. This technology was used earlier in the display device units.
Why LCD monitor flickering?LCD monitor flickering or fluctuation can occur due to the disturbance or damage in the CCFL back-light resulting in the failure. Other options are incorrect because refreshing option is not concerned with the display light. LED light is not used the mentioned monitor.
A DDR4 ram module with that kind of rating would be running at a speed of 2133 megahertz. The pc4-17000 basically means that the particular ddr4 module has a bandwidth of 17000 megabytes per second.
The computer's resolution has been set too low as when the screen of a system looks distorted and the desktop icons do not appear properly, it's a sign of low screen resolution. This is often caused by the lack of proper display driver.
Therefore, CCFL (cold cathode fluorescent lamps) back-light is the light technology that is used in the displays of the devices like LCD TV, LCD monitor etc. This technology was used earlier in the display device units.
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What feature allows a person to key on the new lines without tapping the return or enter key
Answers
The feature that allows a person to key on new lines without tapping the return or enter key is called word wrap
How to determine the featureWhen the current line is full with text, word wrap automatically shifts the pointer to a new line, removing the need to manually press the return or enter key.
In apps like word processors, text editors, and messaging services, it makes sure that text flows naturally within the available space.
This function allows for continued typing without the interruption of line breaks, which is very helpful when writing large paragraphs or dealing with a little amount of screen space.
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Add code to ImageArt to start with your own image and "do things to it" with the goal of making art. You could, for example, change the brightness and blur it. Or you could flip colors around, and create a wavy pattern. In any case, you need to perform at least two transforms in sequence.
Answers
Attached an example of how you can modify the code to apply brightness adjustment and blur effects to the image.
What is the explanation for the code?Instruction related to the above code
Make sure to replace "your_image.jpg" with the path to your own image file.
You can experiment with different image processing techniques, such as color manipulation, filtering,edge detection, or any other transformations to create unique artistic effects.
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In order to average together values that match two different conditions in different ranges, an excel user should use the ____ function.
Answers
Answer: Excel Average functions
Explanation: it gets the work done.
Answer:
excel average
Explanation:
Can someone help me with the following logical circuit, perform two actions. FIRST, convert the circuit into a logical
statement. SECOND, create a truth table based on the circuit/statement. (20 pts. each for statement and
truth table.
Answers
Creation of Truth Table Based on the logical statement, we can create a truth table as shown below:
A B (not A) (not A) and B (not A) and B or A A or (not A) and B 0 0 1 0 1 0 0 1 0 0 1 0 1 1 0 1 1 0 1 1 1 0 1 1 0 1 1 0 1 1 1
The first two columns show the input values, the next column shows the output of the NOT gate, then the output of the AND gate, then the output of the OR gate and finally the output of the logical statement.
We can observe that the output of the logical statement is the same as the output of the OR gate.
Given the logical circuit, we are required to perform two actions on it. Firstly, convert the circuit into a logical statement. Secondly, create a truth table based on the circuit/statement. Let's understand how to do these actions one by one:Conversion of Circuit into Logical Statement.
The given circuit contains three components: NOT gate, AND gate and OR gate. Let's analyze the working of this circuit. The two input variables A and B are first passed through the NOT gate, which gives the opposite of the input signal.
Then the NOT gate output is passed through the AND gate along with the input variable B. The output of the AND gate is then passed through the OR gate along with the input variable A.We can create a logical statement based on this working as: (not A) and B or A. This can also be represented as A or (not A) and B. Either of these statements is correct and can be used to construct the truth table.
Creation of Truth Table Based on the logical statement, we can create a truth table as shown below:
A B (not A) (not A) and B (not A) and B or A A or (not A) and B 0 0 1 0 1 0 0 1 0 0 1 0 1 1 0 1 1 0 1 1 1 0 1 1 0 1 1 0 1 1 1
In the truth table, we have all possible combinations of input variables A and B and their corresponding outputs for each component of the circuit.
The first two columns show the input values, the next column shows the output of the NOT gate, then the output of the AND gate, then the output of the OR gate and finally the output of the logical statement.
We can observe that the output of the logical statement is the same as the output of the OR gate.
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You have found a file named FunAppx86.exe on your hard drive. Which system(s) would this executable file MOST likely run on?
Answers
Since you have found a file named FunAppx86.exe on your hard drive, the systems that this executable file MOST likely run on is Both 32-bit and 64-bit systems.
What does 32- and 64-Bit Mean?When it comes to computers, the processing capability differential between a 32-bit and a 64-bit is everything. 64-bit processors are newer, quicker, and more secure than 32-bit processors, which are older, slower, and less secure.
Therefore, A computer file that contains an encoded sequence of instructions that the system can directly execute when the user clicks the file icon," is the definition of an executable file.
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What are the basic characteristics of the linear structure in data structure
Answers
Explanation:
A Linear data structure have data elements arranged in sequential manner and each member element is connected to its previous and next element. This connection helps to traverse a linear data structure in a single level and in single run. Such data structures are easy to implement as computer memory is also sequential.
You have just purchased a new Dell PowerEdge R820 Rack Server. The server is equipped with four Xeon E5-4650 CPUs, 128 GB of RAM, four 1 TB SAS hard drives, and two 750-watt power supplies. You have a 21-inch LCD monitor connected to your server. You want a UPS to keep your server running for up to 20 minutes in the event of a power failure. You prefer a rackmounted solution. Use the UPS selector tool at APC's Web site (a well-known UPS vendor). The UPS selector is at https://www.apc.com/shop/us/en/tools/ups_selector/
Determine which model of UPS will work well for this server, and state your reasons. Write a one-page memo explaining your choice and why this would work for the above situation. Upload the document here.
Answers
Answer:
To: Management
From: [Your Name]
Subject: UPS Recommendation for Dell PowerEdge R820 Rack Server
This memo is to recommend a UPS solution for the Dell PowerEdge R820 Rack Server. After considering the specs of the server and the desired use, I recommend the APC Smart-UPS RT 8000VA RM XL3U.
The Smart-UPS RT 8000VA RM XL3U is a rack mounted UPS designed for large applications. It has an output of 8000VA/5600W and can provide battery backup for up to 20 minutes. It has eight output receptacles, which should be enough to power the server, monitor, and any other peripherals that may be connected. The UPS also has a built-in web/network management interface, which allows you to monitor the UPS and its connected loads, as well as control the UPS remotely.
In addition, the Smart-UPS RT 8000VA RM XL3U can be configured with an optional external battery pack, which can provide up to 90 minutes of backup power. This is ideal for situations where an extended period of time without power is expected, such as during a blackout.
Overall, the Smart-UPS RT 8000VA RM XL3U is an excellent choice for the Dell PowerEdge R820 Rack Server. It is a powerful, reliable, and feature-rich UPS that can provide up to 20 minutes of battery backup and can be configured with an external battery pack for extended backup times.
If you have any questions or concerns about this recommendation, please do not hesitate to contact me.
Sincerely,
[Your Name]
Which invention made it possible to have an entire computer for a single circuit board
Answers
Answer:
ok lang
Explanation:
While troubleshooting an Internet connection problem for your network, you restarted the modem and then the router. The router is now communicating with the Internet, which you can confirm by observing the blinking light on the router's WAN indicator. However, now your laptop is not communicating with the router. Order the commands below to fix the problem and confirm connectivity.
a. ping
b. ipconfig /renew
c. nslookup microsoft.com
d. ipconfig /release
Answers
Answer:
d. ipconfig /release
b. ipconfig /renew
a. ping
c. nslookup microsoft.com
Explanation:
A router can be defined as a network device that is designed typically for forwarding data packets between two or more networks based on a well-defined routing protocol.
Basically, it is an electrical device or node that is designed to connect two (2) different networks (in different locations) together and allows them to communicate.
Generally, routers are configured using a standard routing protocol with an IP address as the default gateway.
Dynamic Host Configuration Protocol (DHCP) is a standard protocol that assigns IP address to users automatically from the DHCP server.
Basically, a DHCP server is designed to automatically assign internet protocol (IP) address to network devices connected to its network using a preconfigured DHCP pool and port number 67.
On a related note, when a computer that is configured with DHCP cannot communicate or obtain an IP address from the DHCP server, the Windows operating system (OS) of the computer automatically assigns an IP address of 169.254.33.16, which typically limits the computer to only communicate within its network.
I. ipconfig /release
II.. ipconfig /renew
III. ping
IV. nslookup microsoft.com
In a multiprogramming and time-sharing environment, several users share the system simultaneously. This situation can result in various security problems.
a) What are two such problems?
1. One user can read the private data of another user - privacy.
2. One user can corrupt the private data of another user - integrity.
3. One user can prevent another user from getting anything done - denail of service.
b) Can we ensure the same degree of security in a time-shared machine as we have in a dedicated machine? Explain your answer.
There are two answers, either one correct.
a. Yes - if we can ensure that the operating system prevents any sharing of data between users, either for reading or writing, and fairly shares the computer, then we can achieve the same level of security.
b. No - we can never be sure that our software doesn't have bugs, so we can never be sure that we prevent all sharing of data and fairly allocate computer resources.
Answers
Explanation:
a.
One user can read the private data of another user-privacy.One user can prevent another user from getting anything done-denial of service.Indeed, in any multiprogramming and time-sharing environment since the computers of users are networked together, then it is very possible for a bad actor to read the private data of another user, or even prevent another user from accessing their computer by employing a denial of service attack on the network. In other words, the network would be unable to handle the request of users since has been overloaded by another user.
b. a. Yes - if we can ensure that the operating system prevents any sharing of data between users, either for reading or writing and fairly shares the computer, then we can achieve the same level of security.
how the sound files are compressed using lossless compression.
Answers
Data is "packed" into a lower file size using lossless compression, which uses an internal shorthand to denote redundant data. Lossless compression can shrink a 1.5 MB original file, for instance.
A music file is compressed in what way?In order to reduce the file size, certain types of audio data are removed from compressed lossy audio files. Lossy compression can be altered to compress audio either very little or very much. In order to achieve this balance between audio quality and file size, the majority of audio file formats work hard.
What enables lossless compression?A type of data compression known as lossless compression enables flawless reconstruction of the original data from the compressed data with no information loss. It's feasible to compress without loss.
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Exit Word by opening the View menu and then selecting Close.
True
False
Answers
Answer:
False
Explanation:
To exit Word, you can simply click on the "X" button at the top-right corner of the application window or use the keyboard shortcut Alt+F4. Opening the View menu and selecting Close will only close the currently open document or switch to a different view mode within Word, but it will not exit the entire application.
Assume the variable s is a String and index is an int. Write an if-else statement that assigns 100 to index if the value of s would come between "mortgage" and "mortuary" in the dictionary. Otherwise, assign 0 to index.
Answers
Using the knowledge in computational language in python it is possible to write a code that Assume the variable s is a String and index is an int.
Writting the code:Assume the variable s is a String
and index is an int
an if-else statement that assigns 100 to index
if the value of s would come between "mortgage" and "mortuary" in the dictionary
Otherwise, assign 0 to index
is
if(s.compareTo("mortgage")>0 && s.compareTo("mortuary")<0)
{
index = 100;
}
else
{
index = 0;
}
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We gauge the danger of a threat by a combination of factors. What
are they?
[mark all correct answers]
a. Our personal fear factor
b. The degree of vulnerability
c. The probability of a threat
Od. The penalty or injury that may occur if the threat succeeds
in causing harm
Answers
The danger of a threat by a combination of factors are
The degree of vulnerabilityThe probability of a threatWhat is the danger?The danger appears with the likelihood of risk which is considered as a possibility for something bad to happen or any unpredictability that could disturb or hurt someone's well-being or an asset in terms of physical harm or monetary loss.
A flaw that has not been protected against threats is referred to as a vulnerability. A threat is something that can cause harm. To lessen the risk of harm, the proper measurements should be applied.
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A(n) _____ is a common output device for hard copy.
a. laser printer
b. optical character reader
c. plasma display
d. compact disc
Answers
Q1: Fill in the blanks in each of the following statements: a. The international standard database language is ______________. b. A table in a database consists of ___________and ___________ c. Statement objects return SQL query results as ___________ d. The ___________uniquely identifies each row in a table. e. SQL keyword _________ is followed by the selection criteria that specify the rows to selectin a query. f. SQL keywords ___________specify the order in which rows are sorted in a query. g. Merging rows from multiple database tables is called __________ the tables. h. A(n) ________ is an organized collection of data. i. A(n) ________is a set of columns whose values match the primary-key values of anothertable. j. method _______is used to obtain a Connection to a database. k. Interface ___________helps manage the connection between a Java program and adatabase. l. A(n) ___________object is used to submit a query to a database
Answers
Answer:
a. SQL.
b. Rows and columns.
c. ResultSet objects.
d. Primary key.
e. WHERE.
f. ORDER BY.
g. Joining.
h. Database.
i. Foreign key.
j. DriverManager; getConnection ().
k. Connection.
l. Statement.
Explanation:
A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.
A structured query language (SQL) can be defined as a domain-specific language designed and developed for managing the various data saved in a relational or structured database.
In Computer programming, any word restricted for use, only in object names because they belong to the SQL programming language are called reserved word.
Some examples of reserved words in structured query language (SQL) are UPDATE, GROUP, CURRENT_USER, CURRENT_DATE, WHERE, CREATE, DELETE, ORDER BY, etc.
Filling in the missing words or texts in the question, we have;
a. The international standard database language is SQL.
b. A table in a database consists of rows and columns.
c. Statement objects return SQL query results as ResultSet objects.
d. The primary key uniquely identifies each row in a table.
e. SQL keyword WHERE is followed by the selection criteria that specify the rows to selectin a query.
f. SQL keywords ORDER BY the order in which rows are sorted in a query.
g. Merging rows from multiple database tables is called joining the tables.
h. A database is an organized collection of data.
i. A foreign key is a set of columns whose values match the primary-key values of another table.
j. DriverManager method, getConnection () is used to obtain a Connection to a database.
k. Interface connection helps manage the connection between a Java program and a database.
l. A statement object is used to submit a query to a database.
Your professor is advising a new crowd-funding app for women's self-help groups (SHGs) in Latin America on their database architecture. This is the business requirement she has worked on: All campaigns belong to a SHG. An SHG must exist before a campaign is created, and when an SHG is deleted from the database, all its campaigns are deleted. SHGs always belong to a country, and a country must be added to the app before SHGs are added to it. Which of the following is true of the entities defined in the database? Select all that apply.
Question 6 options:
An SHG entity depends on a Campaign entity
A Campaign entity is a depend on the SHG entity
A Country is not dependent on the Campaign entity
An SHG entity is dependent on a Country entity
A Campaign is an Independent entity
Answers
Based on the given information, the following statements are true:
An SHG entity depends on a Country entity.A Campaign entity is dependent on the SHG entity.What is a country entity?In the context of database design, a country entity refers to a logical representation of a country within a database system.
It typically stores information related to countries, such as their names, codes, demographics, or any other relevant data.
The country entity serves as a reference point for other entities in the database, such as self-help groups (SHGs) or campaigns, allowing for proper organization and association of data within the system.
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