.explain file-based data management approach Vs database approach in details?​

Assuming you possess a table entitled "employees" consisting of columns "employee_id", "name", and "salary", to retrieve all employees and their corresponding salaries,

SELECT name, salary FROM employees;

To filter by an individual employee_id, utilize:

SELECT name, salary FROM employees WHERE employee_id = [employee_id];

For sorting results in descending order of salary, employ:

SELECT name, salary FROM employees ORDER BY salary DESC;

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Answer:

groups consisting of people from different functional areas of the company – for example, marketing.

To create tables in SQL, utilize the following code:

CREATE TABLE Person with customer_ID INT as the primary key along with columns first_name, last_name , address, city, state and zip which cannot be empty. Additionally, include birth_day under DATE.  

The next step would be to INSERT values into the above mentioned 'Person' table. The sample values I provide give information such as the ID of the customer- John Doe being assigned a value of 1 along with his address, state or even zip code. Similarly, we have records for Jane Doe, Bob Smith and Samantha Johnson variously spread out all over the country.

Adding an extra column with birth_day under DATE can be done using ALTER TABLE Person ADD COLUMN birth_day date code.

Thereafter, UPDATE Person SET birth_day= '2000-01-01' needs to run so that customer's birth day gets updated automatically.

Create another table called "Gifts" with gift_id being assigned as PRIMARY KEY INTEGER data type and gift_desc described under

Further insert gifts such as pool table, guitar, smartphone, watch and camera into the Gift table that was just created.

Making use of JOIN operations, connect the Customers and Gifts tables  through referential integrity by utilizing FOREIGN KEY constraints based on both customer_id and gift_id in the third newly generated table - Birth_days. ForeignKey connects each record across two tables using these shared columns to generate unique results.

To display all three interlinked tables together presented in unison, SELECT person's first name, last name and matching gift descriptions, only customers who have received birthday gifts are shown. To further enhance understanding, COUNT(*), used to count up the total occurrences treated equally regardless if they are Red vs Green etc, lists down number of gifts each person has been given. Finally, resorted numerically according to number of gifts per gender descending order LIMIT 1%.

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The Python code is created to imitate a simple ground monitors of aircraft system. It imports two classes from two various Python files: PlaneQueue from PlaneQueue.py and PlaneNode from PlaneNode.py. The code is given in the image attached.

The PlaneQueue class is used to constitute a queue dossier structure to hold succeeding flights, while the PlaneNode class is used to conceive instances of individual planes.

The main.py file contains the main program that establishes an instance of the PlaneQueue class and reads in flight codes and either a departure has landed.

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Answer:

The main advantage of a file-based approach to manual data management is that it is simple and easy to understand. Each file is used to store a specific type of data, and the files are stored in a logical hierarchy. This makes it easy to find the data you need, and it also makes it easy to keep track of the data.

Another advantage of a file-based approach is that it is very flexible. You can easily add new files or modify existing files to meet your needs. This makes it a good choice for small businesses or organizations that need to be able to adapt quickly to changes.

Finally, a file-based approach is very cost-effective. You don't need to purchase any special software or hardware, and you can easily set it up yourself. This makes it a good choice for businesses or organizations that are on a tight budget.

However, there are also some disadvantages to a file-based approach. One disadvantage is that it can be difficult to manage large amounts of data. Another disadvantage is that it can be difficult to keep track of changes to the data. Finally, a file-based approach can be less secure than other methods of data management.

Overall, a file-based approach to manual data management is a simple, flexible, and cost-effective way to store data. However, it is important to weigh the advantages and disadvantages before deciding if it is the right choice for your needs.

Answer:

import java.util.Scanner;

public class MyProgram {

   public static void main(String[] args) {

       Scanner input = new Scanner(System.in);

       // Prompt the user to enter their weight in kilograms.

       System.out.println("Enter your weight in kilograms: ");

       double weight = input.nextDouble();

       // Prompt the user to enter their height in meters.

       System.out.println("Enter your height in meters: ");

       double height = input.nextDouble();

       // Calculate the BMI.

       double bmi = (weight * 703) / (height * height);

       // Print the BMI.

       System.out.println("Your BMI is " + bmi);

       // Classify the BMI.

       if (bmi < 18.5) {

           System.out.println("You are underweight.");

       } else if (bmi < 25) {

           System.out.println("You have a normal weight.");

       } else if (bmi < 30) {

           System.out.println("You are overweight.");

       } else if (bmi < 35) {

           System.out.println("You are obese.");

       } else {

           System.out.println("You are severely obese.");

       }

   }

}

Answer:

// This code is for the Breakout game in CodeHS.

// Create the canvas.

var canvas = document.getElementById("game-canvas");

// Create the ball.

var ball = {

 x: canvas.width / 2,

 y: canvas.height / 2,

 dx: 5,

 dy: -5

};

// Create the paddle.

var paddle = {

 x: canvas.width / 2,

 y: canvas.height - 20

};

// Create the bricks.

var bricks = [];

for (var i = 0; i < 10; i++) {

 for (var j = 0; j < 5; j++) {

   bricks.push({

     x: 20 + j * 100,

     y: 20 + i * 20

   });

 }

}

// Draw the ball.

function drawBall() {

 var ctx = canvas.getContext("2d");

 ctx.fillStyle = "red";

 ctx.fillCircle(ball.x, ball.y, 10);

}

// Draw the paddle.

function drawPaddle() {

 var ctx = canvas.getContext("2d");

 ctx.fillStyle = "blue";

 ctx.fillRect(paddle.x, paddle.y, 100, 20);

}

// Draw the bricks.

function drawBricks() {

 var ctx = canvas.getContext("2d");

 ctx.fillStyle = "gray";

 for (var i = 0; i < bricks.length; i++) {

   ctx.fillRect(bricks[i].x, bricks[i].y, 100, 20);

 }

}

// Update the ball's position.

function updateBall() {

 ball.x += ball.dx;

 ball.y += ball.dy;

 // If the ball hits the top or bottom of the canvas, reverse its y-direction.

 if (ball.y < 0 || ball.y > canvas.height) {

   ball.dy = -ball.dy;

 }

 // If the ball hits the left or right side of the canvas, reverse its x-direction.

 if (ball.x < 0 || ball.x > canvas.width) {

   ball.dx = -ball.dx;

 }

 // If the ball hits the paddle, reverse its x-direction.

 if (ball.x + 10 > paddle.x && ball.x < paddle.x + 100 && ball.y > paddle.y && ball.y < paddle.y + 20) {

   ball.dx = -ball.dx;

 }

 // If the ball hits a brick, remove the brick and reverse the ball's x-direction.

 for (var i = 0; i < bricks.length; i++) {

   if (ball.x + 10 > bricks[i].x && ball.x < bricks[i].x + 100 && ball.y > bricks[i].y && ball.y < bricks[i].y + 20) {

     bricks.splice(i, 1);

     ball.dx = -ball.dx;

     break;

   }

 }

}

// Start the game loop.

function startGame() {

 // Clear the canvas.

 var ctx = canvas.getContext("2d");

 ctx.clearRect(0, 0, canvas.width, canvas.height);

 // Draw the ball.

 drawBall();

 // Draw the paddle.

 drawPaddle();

 // Draw the bricks.

 drawBricks();

 // Start the game loop.

 setInterval(updateBall, 20);

}

// Start the game.

startGame();

Here is one possible answers for the CodeHS Javascript and Graphics 3.2.4 activity that prints the statement.

The center of a circle is the center point in a circle from which all the distances to the points on the circle are equal. This distance is called the radius of the circle. Here, point P is the center of the circle.

The diameter of a circle is the distance from a point on the circle to a point. radians away, and is the maximum distance from one point on a circle to another. The diameter of a sphere is the maximum distance between two antipodal points on the surface of the sphere.

The Code HS activity may have specific requirements or constraints that this solution does not take into account. It's best to review the instructions and use this as a guide.

Therefore, The distance between the center of the circle to its circumference is the radius.

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Answer:

B. More cache means more areas to hold data waiting to be processed.

Explanation:

It is better for a CPU to have more than one cache because more cache means more areas to hold data waiting to be processed, which can significantly improve the CPU's performance. When the CPU requests data, it first checks the L1 cache, which is the smallest and fastest cache on the CPU. If the data is not found in the L1 cache, the CPU then checks the L2 cache, which is larger and slightly slower than the L1 cache. If the data is still not found in the L2 cache, the CPU then checks the L3 cache, which is even larger and slower than the L2 cache. Having multiple levels of cache allows the CPU to quickly access frequently used data, which can help reduce the amount of time spent waiting for data to be fetched from the main memory.

(a) 6.964 is the intercept of the regression equation, representing the estimated level of autonomy when age is zero.

(b) 0.06230 is the slope of the regression equation, representing the estimated change in autonomy for each one-unit increase in age.

(c) The regression equation has a weak positive correlation (r = 0.28) between age and autonomy, indicating that age explains only a small proportion of the variance in autonomy.

(d) The likely level of autonomy for someone aged 54 can be estimated by plugging in 54 for age in the regression equation: autonomy = 6.964 + 0.06230(54) = 10.227.

(e) In R, you could generate this regression information using the lm() function, specifying the dependent variable (autonomy) and the independent variable (age) in the formula argument. The summary() function can be used to obtain the regression coefficients and correlation coefficient (r).

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Answer:

Here's the updated program that allows you to store the players for the starting lineup using a list of lists:

POSITIONS = ('C', '1B', '2B', '3B', 'SS', 'LF', 'CF', 'RF', 'P')

lineup = []

def display_lineup():

   print("Player\tPosition\tAt Bats\tHits\tBatting Average")

   for player in lineup:

       name, position, at_bats, hits = player

       if at_bats == 0:

           avg = 0

       else:

           avg = hits / at_bats

       print(f"{name}\t{position}\t\t{at_bats}\t{hits}\t{avg:.3f}")

def add_player():

   name = input("Name: ")

   position = input("Position: ")

   if position not in POSITIONS:

       print("Invalid position. Try again.")

       return

   at_bats = int(input("At bats: "))

   hits = int(input("Hits: "))

   lineup.append([name, position, at_bats, hits])

   print(f"{name} was added.")

def remove_player():

   name = input("Name: ")

   for player in lineup:

       if player[0] == name:

           lineup.remove(player)

           print(f"{name} was removed.")

           return

   print(f"{name} is not in the lineup.")

def move_player():

   name = input("Name: ")

   for i, player in enumerate(lineup):

       if player[0] == name:

           current_index = i

           break

   else:

       print(f"{name} is not in the lineup.")

       return

   new_index = int(input("New lineup number: ")) - 1

   lineup[current_index], lineup[new_index] = lineup[new_index], lineup[current_index]

   print(f"{name} was moved.")

def edit_position():

   name = input("Name: ")

   for player in lineup:

       if player[0] == name:

           position = input("New position: ")

           if position not in POSITIONS:

               print("Invalid position. Try again.")

               return

           player[1] = position

           print(f"{name} was updated.")

           return

   print(f"{name} is not in the lineup.")

def edit_stats():

   name = input("Name: ")

   for player in lineup:

       if player[0] == name:

           at_bats = int(input("At bats: "))

           hits = int(input("Hits: "))

           player[2] = at_bats

           player[3] = hits

           print(f"{name} was updated.")

           return

   print(f"{name} is not in the lineup.")

while True:

   print("""

   MENU OPTIONS

   1 Display lineup

   2 Add player

   3 Remove player

   4 Move player

   5 Edit player position

   6 Edit player stats

   7 Exit program

   """)

   choice = input("Menu option: ")

   if choice == '1':

       display_lineup()

   elif choice == '2':

       add_player()

   elif choice == '3':

       remove_player()

   elif choice == '4':

       move_player()

   elif choice == '5':

       edit_position()

   elif choice == '6':

       edit_stats()

   elif choice == '7':

       print("Bye!")

       break

   else:

       print("Invalid option. Try again.")

The program uses a list of lists to store each player in the lineup. Each sublist contains the player's name, position, at bats

Explanation:

Algorithm to add three numbers:

Flowchart:

sql

Copy code

      +------------+

      |   Start    |

      +------------+

              |

              V

      +------------------+

      | Initialize variables |

      | num1, num2, num3, sum |

      +------------------+

              |

              V

      +-------------------+

      |   Read num1, num2, and num3 |

      +-------------------+

              |

              V

      +------------------+

      |   Add num1, num2, and num3 |

      |    and store in sum |

      +------------------+

              |

              V

      +-------------+

      |  Display sum |

      +-------------+

              |

              V

      +---------+

      |   Stop  |

      +---------+

Therefore, Note: The above flowchart is a simple representation of the algorithm and can be modified as per individual needs.

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Answer:

Technology is the application of knowledge for achieving practical goals in a reproducible way. The word technology can also mean the products resulting from such efforts, including both tangible tools such as utensils or machines, and intangible ones such as software.

uses

Communication

social media

health care

Answer:

We use technologies to exchange information, to clean our clothes, to prepare our meals and to get from one place to another. But even everyday items like door locks, floor panels and furniture are technologies that we now take for granted and that seem less impressive to us than self-driving cars or 3D printing. But technology doesn’t automatically have to be complicated. Simply put, we are always using technology when we use scientific knowledge to achieve a specific purpose, whether in  industry or in our daily lives. From the discovery of the wheel to computers and from mp3 players to the latest technologies like self-driving cars, countless technological innovations have shaped daily life and will continue to influence it in the future.

In this problem, we are given that Mr. Murphy has 2 boxes of pens in his office, with 5 bundles of pens in each box, and 50 pens in each bundle. We can find the total number of pens Mr. Murphy currently has by multiplying the number of boxes by the number of bundles in each box, and then by the number of pens in each bundle. This gives us:

2 boxes x 5 bundles per box x 50 pens per bundle = 500 pens

Next, we are told that Mr. Murphy wants to have 750 pens available for the fundraiser. To determine how many more pens he needs to order, we can subtract the number of pens he currently has from the total number of pens he wants to have:

750 pens - 500 pens = 250 pens

This tells us that he needs to order 250 more pens to have a total of 750 pens available for the fundraiser.

Mr. Murphy currently has 500 pens in his office because 2 x 5 x 50 = <<2*5*50=500>>500.

Mr. Murphy needs to order 250 more pens because 750 - 500 = <<750-500=250>>250.

Therefore, Mr. Murphy should order 250 more pens.

Media and information literacy​  enables me to have access, analysis, evaluation & creation of media/information  in various formats.

The media and information literacy​  a crucial skill in today's society, with prevalent issues like information overload & fake news. MIL helps develop critical thinking, awareness of biases and propaganda, and informed decision making.

So,  It includes info retrieval, media analysis and evaluation, and ethical considerations in media creation. In the digital age, MIL is crucial. People need to spot credible sources and comprehend data presentation across media formats. As tech progresses, we must keep improving our MIL skills for media & info navigation. It's our social duty.

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This approach makes the assumption that the marks have already been entered and are being saved in a list or array. If not, you will need to provide input statements to collect the user's marks.

Let's say the passing score in Microsoft Excel is 70. And the student's grades are a B4. Afterward, type the following formula in cell C4: =IF(B470,"FAIL","PASS"). Accordingly, insert the word FAIL in cell B4 if the score in B4 is less than 70, otherwise/otherwise enter the wordPASS.

1. Set sum to zero

2. FOR i = 0 to 3

3. input symbols [i]

4. SET marks[i] = marks + sum

5. END WITH

SET average = total / 4.

7. Set the final grade to the average.

PRINT "Passing" + final_grade IF final_grade >= 50.

10. ELSE

11. PRINT "Failing" followed by the grade

12. END IF

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The problem involves analyzing given tables and identifying their normal form, dependencies, and transforming them to 3NF if necessary.

1) a. UNF (contains a repeating group)

b.

STUDENT SSN > ST_NAME, MAJOR, ADVISOR NUM, ST CREDITHRS, CLASS STANDING

ADVISOR NUM > ADV_NAME, ADV OFFICE, ADV PHONE

STUDENT SSN is the primary key of the table.

c.

1NF:

STUDENT (STUDENT SSN, ST_NAME, MAJOR, ADVISOR NUM, ST CREDITHRS, CLASS STANDING)

ADVISOR (ADVISOR NUM, ADV_NAME, ADV OFFICE, ADV PHONE)

2)

a. 1NF

b.

MOVIE NUM > MOVIE TITLE

STAR NUM > STAR NAME

MOVIE NUM, STAR NUM is the primary key of the table.

c.

1NF:

MOVIE_STAR (MOVIE NUM, STAR NUM)

STAR (STAR NUM, STAR NAME)

MOVIE (MOVIE NUM, MOVIE TITLE)

3)

a. 3NF

b.

MOVIE NUM > MOVIE TITLE

DIRECTOR NUM > DIR NAME

MOVIE NUM is the primary key of the table.

c.

The given table is already in 3NF, so no transformation is needed.

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First, the program uses a try/except block for file management operations. This is approved to handle potential mistakes that might happen while gap and reading the file.

If the file is not erect or there is an I/O mistake while education the file, an appropriate error idea is presented. Then, the program opens the file states.txt using the open() function accompanying the 'r' (state) mode, that generates a file object for reading the connotations of the file.

The with declaration is used to certainly close the file when the block is exited.Next, the program reads each line of the file utilizing upper class comprehension, and stores each state name as an part in united states of america list.

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A Mealy machine and a Moore machine can be designed to detect the sequence "1011". For the Mealy machine, states represent the matched part of the sequence, and output depends on transitions.

For the Moore machine, states also represent the matched part, and output depends on states.

To design a Mealy machine, follow these steps:

1. Create states (S0, S1, S2, S3) representing matched parts of the sequence.

2. Add input edges and output labels for each transition (0 or 1).

3. For correct input, transition to the next state (e.g., S0 -> S1 on input 1).

4. For incorrect input, transition back to the appropriate state.

5. Set output 1 when the final state is reached (S3), and 0 otherwise.

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Your written code for generating random numbers for both blackjack as well as roulette is correct.

For blackjack, you generate a chance number between 1 and 10 for two together the dealer and the performer using the Math.haphazard() method, and before you increase 1 to the result to get any between 1 and 10. This will work well for the ticket game where the program values are middle from two points 1 and 10, and there is no need to produce numbers above 10.

For roulette, it  will work well for the game of game depending on luck, where practice on the wheel range from 1 to 36.

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The value of the expression is 16Y + 0.666..., where Y is the value of the variable Y.

To evaluate the expression, we need to substitute the given values of a, b, c, and d into the expression and then perform the arithmetic operations according to the order of operations in Pascal.

The order of operations in Pascal is as follows:

Parentheses

Exponentiation

Multiplication and Division (performed left to right)

Addition and Subtraction (performed left to right)

Using these rules, we can evaluate the expression as follows:

Y sqr(a) + b c mod 4 / d

= Y * sqr(4) + (b * c) mod 4 / 3 //substituting a=4, b=6, c=10, and d=3

= Y * 16 + (60 mod 4) / 3 //evaluating sqr(4) and b*c, and then evaluating mod 4

= Y * 16 + 0.666... //evaluating the division, which is performed before addition

= 16Y + 0.666... //adding the two terms

Therefore, the value of the expression is 16Y + 0.666..., where Y is the value of the variable Y.

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Answer:

hardware ID number

Explanation:

The Format Painter is a formatting tool that facilitates copying of formats from one text section to others by applying the same styles swiftly and easily.

It is typically integrated into word processors such as G o o gle Docs or Microsoft Word, rendering it an efficient method for editing texts in various settings. Using this tool, users enjoy effortless manipulation of font types, hues, and alignment, among other forms of formatting requirements.

The steps involved are straightforward; simply pinpoint the origin section, highlight your preferences with just one click, activate the painting feature, and brush over the targeted areas you desire, achieving a uniform format entirely anew.

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An example of how computer programming is applied in real world situations is the use of traffic lights.

The traffic flow data is processed by the computer to establish the right sequence for the lights at junctions or ramps. The sequencing information is sent from the computer to the signals via communications equipment.

INRIX Signal Analytics is the first cloud-based solution that harnesses big data from linked automobiles to assist traffic experts in identifying and understanding excessive delays at signalized junctions throughout the country — with no hardware or fieldwork required.

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The decimal value 0.24 is in the middle and the binary value 0.0100 is the greatest of the three numbers, with binary value 0.0011 being the lowest.

There is only one 4-digit binary number, which is zero. The smaller number in binary, decimal, and hexadecimal bases is actually this one. Therefore, 0 is the smallest 4-digit binary number and it remains 0 when expressed in any other base.

The binary representation of the number 0.1 is 0.00011001100110011... The 0011 pattern is infinitely repeatable. The binary equivalent of 0.1 cannot be stored. 1/10 is equal to 0.1, as we all know.

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Answer: b I think please correct me if I'm wrong

Explanation:

Answer:

The correct answer is C.

The packet sequence number is stored in bits 1-4, which in this case is 10011100. This is equal to 23 in decimal.

The total number of packets in the message is stored in bits 5-8, which in this case is 01010110. This is equal to 22 in decimal.

Therefore, this is packet 23 out of 22 total packets in the message.

* * *

Here is a breakdown of the bits in the packet:

```

Bits | Description

------- | --------

1-4 | Packet sequence number

5-8 | Total number of packets in the message

9-16 | Sender ID

17-24 | Receiver ID

25-64 | Message data

`

Answer:

The meaning of I.C.T Lab is Computer Lab.

We use I.C.T Lab rather than using Computer Lab as it looks more formal and more Diciplined.

Explanation:

IF MY ANSWER IS HELPFUL THEN PLEASE RATE IT, LIKE IT, FOLLOW ME AND GIVE ME A BRAINLIEST...PLEASE.

THANK YOU...!

Answer:

Information and Communication Technology

Explanation:

In the lab, I.C.T stands for Information and Communication Technology.  The ICT Lab is constructed and outfitted with computers and other learning resources to improve the study and teaching of Computer Studies, Data Processing, and other related disciplines and academic activities.

Match the president name and he expanded:

On March 15, 1767, Andrew Jackson was born; he passed away on June 8, 1845. He was to stand in for the "corrupt bargain" that, in his opinion, cost him the presidency and gave him the drive to win the next election no matter what.

According to the various president are the various decision. The president is the used of the power to take the decision.

Franklin Roosevelt: The veto power and the political reasons.

Harry Truman: The used right to declare war in Korea.

Andrew Jackson: president power, executive orders.

As a result, the significance of the Andrew Jackson are the aforementioned.

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The question seems to be incomplete, the complete question will be:

Drag the tiles to the correct boxes to complete the pairs.

Match each president’s name to the correct description of how he expanded.

Franklin Roosevelt, Harry Truman, Andrew Jackson

presidential power.

Issued the most

executive orders

Used veto power for

political reasons

Bypassed Congress to

declare war in Korea

SpaceX gains a competitive advantage with the implementation of 3D printing technology, which provides an economical solution to producing lightweight and customizable parts that are intricate in design.

The use of this cutting-edge technology facilitates rapid iteration, reducing both developmental costs and time. It enables the company to manufacture these materials in-house, thereby averting external supply chain inefficiencies.

Moreover, by using Business Intelligence tools to analyze data related to some factors as part performance and supply chain logistics, it becomes easier for SpaceX not only to monitor the operational efficiency of its manufactured products but also spot possible optimization opportunities.

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