It is true that database recovery, the transaction log shows both before and after images of records that has been modified by insert, delete, or update.
What is database?A database is a collection of data that has been organised to make it simple to manage and update.
Data records or files containing information, including as sales transactions, customer information, financial data, and product information, are often aggregated and stored in computer databases.
Rebuilding a database or table space after an issue such a media or storage loss, power outage, or application failure is known as recovery.
If your database or certain table spaces have been backed up, you can restore them if they are ever corrupted or damaged in any manner.
When a database is recovered, the transaction log displays both the before and after pictures of any records that have been updated, deleted, or inserted.
Thus, the given statement is true.
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Reusing existing software to create a new software system or product can be a cost-efficient approach to development in many software projects. It may not be cost-efficient in all projects. As a software engineer, you can determine if it is the best approach for your project only if you know, and can estimate, the associated costs. Which of the following costs is NOT one of the costs typically considered when estimating the cost of reuse?
A. The purchase or license cost of COTS software, where applicable
B. Modification and/or configuration costs associated with making reusable software meet system requirements
C. The cost associated with finding analyzing, and assessing software for reuse
D. Legal costs associated with defending against charges of copyright infringement
E. Integration costs associated with mixing reusable software and other software (either new or reused)
Answer:
D. Legal costs associated with defending against charges of copyright infringement
Explanation:
When estimating the cost of reusing software you are planning to obtain the necessary licences that are required for your project which will prevent copyright infringement claims from taking place.
Consider the following code snippet:
public static void print(E[] a)
{
for (int i = 0; i < a.length; i++)
{
System.out.println(a[i] + " ");
}
}
int[] a = {3,6,5,7,8,9,2,3};
print(makeArray(a));
Assume that the method call to print(makeArray(a)) works correctly by printing the int array a. Which of the following headers for the makeArray method will make this possible?
I public static Integer[] makeArray(int[] a)
II public static E[] makeArray(int[] a)
III public static Integer[] makeArray(E[] a)
I and III only
I only
I and II only
II and III only
What does it mean when the syntax ? extends D is used?
Any subclass of D may be used.
Any superclass of D may be used.
Any subclass or superclass of D may be used.
This indicates a wildcard with an upper bound.
Consider the following code snippet that declares the GraduateStudent class:
public GraduateStudent extends Student { . . .}
Which of these statements are false?
a. I GraduateStudent is a subclass of Student
b. II Stack is a subclass of Stack
c. III Stack is a subclass of Stack
d. II only
e. III only
f. II and III only
g. I only
Answer:
Explanation:
1) I and II only ... This is because the makeArray parameter must be an int[] since that is what the a array that is being passed actually is. The return type should be E[] only but since that is not an option, it could work with Integer[] if the E class allows.
2) Any superclass of D may be used. Although this is not complete, extends allows for a subclass to access any variables and methods within the superclass D but not directly access another superclass of D.
3) I only ... GraduateStudent is a subclass of Student
Use the drop-down menus to describe how to add a data bar to a report.
1. Open the table in view.
2. Click the column of the desired numerical field.
3. Click the conditional tab Format, then .
4. In the Rules Manager dialog box, click .
5. Select to “compare to other records,” and determine whether you want the value and bar to show at the same time.
6. Adjust the desired length of the bar and the color. Click OK.
7. Once satisfied with your rule, click and then OK.
Answer:
1. layout
3. conditional formatting
4. new rule
7. apply
Explanation:
just did it on edge
Derive the three-dimensional transformation matrix for scaling an object by a scaling factor s in a direction defined by the direction cosines alpha , beta , gamma
Answer:
i dont know
Explanation:
i dont knoe im doing this for the points hehe
If you notice that a worksheet displays columns A, B, C, E, and F, what happened to column D?
Answer:
HUDSU
Explanation:WGSDBHEUIWDBWJJ
The Fibonacci numbers are 0, 1, 1, 2, 3, 5, 8, 13, ......., where each number is the sum of the two preceding numbers. Write a program that declares an array of length 15 and fills the array with the first 15 Fibonacci numbers. Print the array to check if the array elements are correct. Use the sizeofoperator instead of 15 whenever you need to use the array length.
Design a program that asks the User to enter a series of 5 numbers. The program should store the numbers in a list then display the following data: 1. The lowest number in the list 2. The highest number in the list 3. The total of the numbers in the list 4. The average of the numbers in the list
Answer:
The program in Python is as follows:
numbers = []
total = 0
for i in range(5):
num = float(input(": "))
numbers.append(num)
total+=num
print("Lowest: ",min(numbers))
print("Highest: ",max(numbers))
print("Total: ",total)
print("Average: ",total/5)
Explanation:
The program uses list to answer the question
This initializes an empty list
numbers = []
This initializes total to 0
total = 0
The following loop is repeated 5 times
for i in range(5):
This gets each input
num = float(input(": "))
This appends each input to the list
numbers.append(num)
This adds up each input
total+=num
This prints the lowest using min() function
print("Lowest: ",min(numbers))
This prints the highest using max() function
print("Highest: ",max(numbers))
This prints the total
print("Total: ",total)
This calculates and prints the average
print("Average: ",total/5)
What power points feature will you use to apply motion effects to different objects of a slide
Answer:
Animation scheme can be used to apply motion effects to different objects of a slide.
Please help on this problem about data
Answer:
The answer is "sound"
Explanation:
Video: It includes both image and voice.
Images: It also includes data.
Memory: it uses to contain data.
Sound: It is a hardware device.
Documents: It also contains files like text, images, graphs, and bar charts.
Text messages: It used in the electronic device, that includes string data.
numbers: It is also used to store data.
what should be at the top of a tower
Answer:
mini part. a model cellphone tower
Assume a manufacturing company which manufactures and sells several electronic
products. This company has a list of suppliers who supply various components for
different products. Several components assembled together form a product. A product
will be manufactured in many work centers. Each product contains several components.
A product has at least one component and may comprise of several components. A
component must belong to a product and the same component can be used in multiple
products. Also mention the quantity of the component which a product requires.
Company has a list of suppliers who supply various components. A supplier may not
be supplying any component and may supply several components. A component must
be supplied by at least one supplier or several suppliers may provide the same
component. A supplier supplies the quantity and unit price of the products. A supplier
also supplies the quantity and unit price of the components. Each product will be
manufactured in single or multiple work centers. A work center may not produce a
product and may produce several products. Each work center will have one or more
employees and an employee would be working in single work center only. A customer
may not place any order and may place multiple orders. But an order will belong to a
specific customer only. Each order may contain single product or multiple products and
the same product may be demanded in many orders.
Construct an ER diagram for the manufacturing company.
Answer:
reboot it
Explanation:
I would select Straight 2-way Merge sort over Quick sort when which of the following are true.
A. Incorrect selections will be penalized.
B. If I knew that the distribution of the data was significantly skewed.
C. If space were not an issue If I knew the size of the data set was very large.
D. If I knew that the data tended to be in order.
Answer:
I would select Straight 2-way Merge sort over Quicksort when:
C. If space were not an issue If I knew the size of the data set was very large.
Explanation:
For large datasets, the Straight 2-way Merge sort has been found to be more efficient than the Quicksort. It also works faster than Quicksort. However, Quicksort has been found to be more efficient, working faster than the Straight 2-way Merge sort with small datasets. The two are algorithms for sorting. While Straight 2-way Merge Sort uses two streams with repetitions, the Quicksort uses just one stream without repetitions and additional storage space.
From the philosophical standpoint, especially in the discussion of moral philosophy or ethics, why do we consider “murder” or “killing” wrong or bad?
Explanation:
Morality is a set of values and habits that a society acquires over time and can be categorized as good and bad values, right and wrong, justice and crime. Ethics is defined as the study of morals, the practical application of moral behaviors defined by society.
Therefore, the concept of "murder" or "killing" is seen as an immoral act by the vast majority of society around the world, strengthened by the set of moral conduct common to all human beings, which are the Articles on the Universal Declaration of Human Rights. Human Rights, which is an official document of the UN, which contains several universair and analytical rules on the rights of every individual, such as the right to life, security, freedom, etc.
Write a modular program that accepts up to 20 integer test scores in the range of 0 to 100 from the user and stores them in an array. Then main should report how many perfect scores were entered (i.e., scores of 100), using a value-returning countPerfect function to help it. Hint: Have the program count the scores as they are entered. Your program may need this information later.
Answer:
The program in Java is as follows:
import java.util.*;
public class Main{
public static int countPerfect(int [] scores, int n){
int count = 0;
for(int i = 0;i<n;i++){
if(scores[i] == 100) {count++;} }
return count; }
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int n;
System.out.print("Number of scores: ");
n = input.nextInt();
if(n<1 || n>20){n=20;}
int [] scores = new int[n];
for(int i = 0;i<n;i++){
scores[i] = input.nextInt(); }
System.out.print("Perfect Scores: "+countPerfect(scores,n));
}
}
Explanation:
The countPerfect function begins here
public static int countPerfect(int [] scores, int n){
This initializes the count to 0
int count = 0;
This iterates through the array elements
for(int i = 0;i<n;i++){
If current score is 100, count is incremented by 1
if(scores[i] == 100) {count++;} }
This returns the value of count
return count; }
The main begins here
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
This declares the number of scores, n
int n;
Prompt to enter the number of scores
System.out.print("Number of scores: ");
This gets input for n
n = input.nextInt();
If input is less than 1 or greater than 20, n is set to 20
if(n<1 || n>20){n=20;}
This declares the scores as an array
int [] scores = new int[n];
This iterates through the array and get inputs for each score
for(int i = 0;i<n;i++){
scores[i] = input.nextInt(); }
This calls the function and print the number of perfect scores
System.out.print("Perfect Scores: "+countPerfect(scores,n));
}
SHORT ANSWERS:
Q.1 List some causes of poor software quality?
Q.2 List and explain the types of software testing?
Q.3 List the steps to identify the highest priority actions?
Q.4. Explain the importance of software quality?
Answer:
Hard drive Microsoft have the highest priority actions
g Write an UPDATE statement that changes the address for the row with vendor_id 4 so the suite number (Ste 260) is stored in vendor address instead of vendor address 1. Then, use SQL Developer to verify the change (you may need to click the Refresh button at the top of the Data tab to see the change). If this works correctly, go back to the tab for the UPDATE statement and click the Commit button to commit the change.
Answer:
UPDATE 'Vendors' SET 'address' = 'Ste 260' WHERE 'vendor_id' = 4
Explanation:
Required
Write an update statement
The question is incomplete as the table name is not given.
So, I will make the following assumptions.
Table name = Vendors
So, the update statement is:
UPDATE 'Vendors' SET 'address' = 'Ste 260' WHERE 'vendor_id' = 4;
The above statement queries the vendors table and changes the address of vendor_id 4 from the initial value to Ste 260
The code below assigns the 5th letter of each word in food to the new list fifth. However, the code currently produces errors. Insert a try/except clause that will allow the code to run and produce of list of the 5th letter in each word. If the word is not long enough, it should not print anything out. Note: The pass statement is a null operation; nothing will happen when it executes.
food = ["chocolate", "chicken", "corn
fifth = []
for x in food:
fifth.append(x[4])
Answer:
Answered below
Explanation:
foods = ["chocolate", "chicken", "corn"]
fifth_char = []
for food in foods:
"""Add a try statement to add fifth character to fifth_char list. If word is not long enough, the except part executes the the pass and nothing is printed.""'
try:
fifth_char.append(food[4])
except:
pass
#print out elements in new list
for c in fifth_char:
print(c)
PLEASE HELP I REALLY NEED IT ASAP
Select the correct answer. Layla and her team have installed a fire alarm system in an office. The alarm system connects to a wireless network, so it can be monitored using smartphones and computers connected to the same network. Which wireless technology does the fire alarm system use?
OA satellite
OB. Bluetooth
O C. infrared
OD. WI-FI
Answer:
wifi
Explanation:
if it's running on the same network that's wifi
Answer:
The correct answer is D. Wi-Fi.
Explanation:
I got it right on the Edmentum test.
Use the drop-down menus to explain how to locate the Consolidate dialog box.
1. Select the ------------
tab on the ribbon.
2. Look in the ----------
group and select -----------
.
Answer:
data, data tools, consolidate
Explanation:
I just did it :)
Which of the following describes the line spacing feature? Select all that apply. adds space between words adds space between lines of text adds space between paragraphs adds space at the top and bottom of a page adds bullet points or numerical lists
Answer:
adds space between lines of text
adds space between paragraphs
Explanation:
Write the mostValuableNeighbor method, which compares the item in row r and column c to the items to its left and to its right. The method determines which of the three items has the greatest value and returns its name. If more than one of the values have a value that is greatest, then any of their names can be returned. If the item has no item to its left, it is compared only to the item to its right. If the item has no item to its right, it is compared only to the item to its left.
Answer:
Explanation:
The following method is written in Java, using the Item class and ItemGrid class found online we can use this method to grab the 2-dimensional array and compare the three neighbors in the same row. It saves the position of the neighbor with the greatest value in the variable greatest and then uses that position to call the getName() method from the object in that position to get the name of that Neighbor and returns the name.
public String mostValuableNeighbor(ItemGrid grid, int r, int c) {
int greatest = grid[r][c];
if (grid[r][c+1].getValue() > greatest.getValue()) {
greatest = grid[r][c+1];
}
if (grid[r][c-1].getValue() > greatest.getValue()) {
greatest = grid[r][c-1];
}
return greatest.getName();
}
In this exercise we have to use the knowledge of computational language in JAVA to write the code.
We have the code in the attached image.
The code in Java can be found as:
public String mostValuableNeighbor(ItemGrid grid, int r, int c) {
int greatest = grid[r][c];
if (grid[r][c+1].getValue() > greatest.getValue()) {
greatest = grid[r][c+1];
}
if (grid[r][c-1].getValue() > greatest.getValue()) {
greatest = grid[r][c-1];
}
return greatest.getName();
}
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Acróstico sobre mouse
Parts arrive at a two-machine system according to an exponential interarrival distribution with mean 20 minutes. Upon arrival, the parts are sent to Machine 1 and processed. The processing-time distribution is TRIA (4.5, 9.3, 11) minutes. The parts are then processed at Machine 2 with a processing-time distribution as TRIA (16.4, 19.1, 20.8) minutes. The parts from Machine 2 are directed back to Machine 1 to be processed a second time (same processing-time distribution but an independent draw from it). The completed parts then exit the system. Run the simulation for a single replication of 20,000 minutes to observe the average number in the machine queues and the average part cycle time with Arena Model
Answer:
I really don’t know computer science but I give u good luck in finding an answer to this question.
Explanation:
Question 20:
Which of the following scenarios involve computers making predictions based on the analysis of
patterns in large data sets?
Select two answers.
Astate education board analyzing demographic information and academic records to identify students at risk
of dropping out of school.
The federal government analyzing state spending data to identify which states spent the most on social
services
A video streaming service analyzing viewer's habits to suggest videos based on the viewing history of other
viewers.
An airline analyzing flight records to determine the routes it operates with the least bookings.
Answer:
A video streaming service analyzing viewer’s habits to suggest videos based on the viewing history of other viewers.
A state education board analyzing demographic information and academic records to identify students at risk of dropping out of school.
Explanation:
I just took the test and passed when you have multiple choice questions always pick ones that similar to each other and make sure it fit the question.
Make these negative sentences more positive and polite. Keep the meaning.
1.Don’t run for the bus. You might slip on the ice and fall
2.Don’t tell me what you can’t do.
3.Don’t eat with your mouth open.
4.Don’t submit an incomplete report.
Answer:
You should not run for the bus. You could slip on the ice and fall
Would you stop telling me what you can't do
Could you not eat with your mouth open
You should not submit an incomplete report
Answer:
You should not run for the bus. You could slip on the ice and fall
please stop telling me what you can't do.
please do not eat with your mouth open
you shouldn't submit an incomplete report. it could affect your grades negatively.
Explanation:
hope this helps!
~mina
there are several application to assist you to surf through the internet mention three regarding computer
Answer:
E-mailweb browsingpeer-to peer servicesLAB: Varied amount of input data
Statistics are often calculated with varying amounts of input data. Write a program that takes any number of integers as input, and outputs the average and max.
Ex: If the input is:
15 20 0 5
the output is:
10 20
Answer:
Answered below
Explanation:
#python program
#First get the number of inputs from user
num_inputs = int(input("Enter number of inputs:")
j = 0
sum =0
max = 0
while j < num_inputs:
num = int(input ("Enter numbers: ")
sum = sum + num
if num > max:
max = num
j++
#Compute the average
average = sum/num_inputs
print (average, max)
Consider the following recursive method.
public static String doSomething(String str)
{
if (str.length() < 1)
{
return "";
}
else
{
return str.substring(0, 1) + doSomething(str.substring(1));
}
}
Which of the following best describes the result of the call doSomething(myString) ?
A
The method call returns a String containing the contents of myString unchanged.
B
The method call returns a String containing the contents of myString with the order of the characters reversed from their order in myString.
C
The method call returns a String containing all but the first character of myString.
D
The method call returns a String containing only the first and second characters of myString.
E
The method call returns a String containing only the first and last characters of myString.
Answer:
A
The method call returns a String containing the contents of myString unchanged.
Explanation:
Need to compress this IPv6 Address
ad93:a0e4:a9ce:32fc:cba8:15fe:ed90:d768
I can't underatnd your question
SORRY
What is a font?
O How the text for a paragraph appears
O A display of text characters in a specific style and size
O Text that has been made bold
O Artistic elements you can add to text