Which ine has an error ?1 public static int computesumofsquares(int num1, int num2) { 2 int sum; 3 sum = (num1 * num1) (num2 * num2); 4 return; 5 }

Regarding "zombie" threads, these are threads that have completed their execution but have not yet been cleaned up by the operating system.

There are several possible states that a thread can be in, including:

1. New: When a thread is first created but has not yet been started.
2. Runnable: When a thread has been started and is running, or is waiting for a resource to become available.
3. Blocked: When a thread is waiting for a monitor lock to be released by another thread.
4. Waiting: When a thread is waiting for another thread to perform a particular action.
5. Timed Waiting: When a thread is waiting for a specific amount of time for a resource to become available.
6. Terminated: When a thread has completed its execution and has exited.

Zombie threads occur when a parent process does not wait for its child process to terminate properly. To clean up zombie threads, the parent process needs to call the wait() function to retrieve the exit status of the child process and release any system resources that were allocated to it. If the parent process fails to do this, the zombie thread will remain in the system until the system is rebooted.

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The perimeter of the square-shaped beam with area 16.00 and orientation 1.00 is 16.00.

function [perimeter] = geometry(across_section, area, orientation)
% This function calculates the perimeter of a beam given its cross section
% properties and orientation in space.

% Calculate the dimensions of the cross section based on its area and shape
if strcmp(across_section, 'square')
   side_length = sqrt(area);
   width = side_length;
   height = side_length;
elseif strcmp(across_section, 'rectangle')
   width = sqrt(area / orientation);
   height = orientation * width;
elseif strcmp(across_section, 'circle')
   radius = sqrt(area / pi);
   width = 2 * radius;
   height = 2 * radius;
end

% Calculate the perimeter based on the dimensions and shape of the cross section
if strcmp(across_section, 'square') || strcmp(across_section, 'rectangle')
   perimeter = 2 * (width + height);
elseif strcmp(across_section, 'circle')
   perimeter = 2 * pi * width;
end

% Display the perimeter and return it as the function output
fprintf('The perimeter of the %s-shaped beam with area %.2f and orientation %.2f is %.2f.\n', ...
   across_section, area, orientation, perimeter);
end

You can use this function in Matlab by calling it with the appropriate inputs, like this:

perimeter = geometry('square', 16, 1);

This would calculate the perimeter of a square-shaped beam with area 16 square units and no particular orientation in space. The output would be:

The perimeter of the square-shaped beam with area 16.00 and orientation 1.00 is 16.00.

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The code defines a function called "compute" that takes a list of numbers as input and computes the product of each number in the list minus two. The product is then returned as the output of the function.

The code then creates a list of three numbers (6, 5, 7) and assigns it to the variable "values". It calls the "compute" function, passing in the list of values, and assigns the result to a variable called "computed_value".

Finally, the code prints the value of "computed_value".

If we run this code, the output will be:

-72

This is because the product of (6-2) * (5-2) * (7-2) is equal to -72.

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The Basic Data section, which is found on the Front page of the Soldier Talent Profile, provides essential information about the soldier.

Yes, that is correct. The Basic Data section, which includes information such as name, rank, and contact information, is only displayed on the front page of the Soldier Talent Profile. The other sections, such as Skills and Experience, Education, and Awards and Certifications, are displayed on subsequent pages. This key section ensures that relevant details are easily accessible for quick reference, allowing for efficient decision-making and better understanding of the soldier's abilities and background.
The Basic Data section, which is found on the Front page of the Soldier Talent Profile, provides essential information about the soldier. This key section ensures that relevant details are easily accessible for quick reference, allowing for efficient decision-making and better understanding of the soldier's abilities and background.

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Answer:

Current computer systems do have advantages over the CMI in terms of speed, storage capacity, and processing power.

Additionally, modern computer systems are more versatile and can be used for a wide range of applications beyond those that the CMI was designed for.

They are also easier to use and maintain, with more user-friendly interfaces and simpler troubleshooting processes.

Finally, modern computer systems benefit from ongoing research and development, which allows for continuous improvements and advancements in technology.

Hope this helps!

The amount of memory needed to store the image would be about 2 MB.

If the image is in grayscale (not color), as well as has a resolution of 1024x1024 pixels, with a 16-bit color depth (2 bytes per pixel), the total size of the image cal be calculated as:

1024  x 1024 x 2

= 2,097,152 bytes

To convert this to megabytes, we need to divide by 1,048,576 bytes per megabyte:

2,097,152 bytes ÷ 1,048,576 bytes per megabyte

= 2 megabytes

Therefore, based on the above, The memory size that is needed to save the image is approximately 2 Megabytes.

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The most crucial advice for XYZ Corporation to ensure fruitful BI and analytics efforts would be to establish clear goals and objectives for their BI and analytics initiatives.

This would involve identifying key performance indicators (KPIs) and metrics that align with the overall business strategy and using them to measure the success of their BI and analytics efforts. Additionally, it is important to ensure that the necessary resources, including skilled personnel and appropriate technology, are in place to support these initiatives. Finally, regular monitoring and analysis of the data collected should be conducted to ensure that any necessary adjustments can be made in a timely manner.

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The result of running this code would be: x.a = 4. x.b = 2, y.a = 3, y.b = 4
```

There are a few syntax errors in the provided code. Here's the corrected code with explanations for each line:

```
#include   // Include necessary header files
#include

int main() {  // Declare the main function
   struct MYDATE {  // Define a struct with members a, b, and c
       int a, b;
       char c;
   } x, y;  // Create two instances of the struct, x and y
   
   struct MYDATE *p1, *p2;  // Declare two pointers to the struct
   p1 = &x; p2 = &y;  // Assign the addresses of x and y to p1 and p2
   
   x.a = 1; x.b = 2;  // Assign values to x's members a and b
   y.a = 3; y.b = 4;  // Assign values to y's members a and b
   
   y.b = (p2->b > p1->a) ? p2->b : 5;  // If p2's b value is greater than p1's a value, assign p2's b value to y.b. Otherwise, assign 5 to y.b.
   x.a = x.b + p1->b;  // Assign the sum of x's b value and p1's b value to x's a value
   
   printf("x.a = %d. x.b = %d, y.a = %d, y.b = %d", p1->a, p1->b, p2->a, p2->b);  // Print the values of x and y's members using the pointers
   
   return 0;  // End the function
}
```

The result of running this code would be:

```
x.a = 4. x.b = 2, y.a = 3, y.b = 4
```

Therefore:

- `x.a` would be 4
- `x.b` would be 2
- `y.a` would be 3
- `y.b` would be 4.

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Based on the given directions, it appears that we are dealing with a class named "Term" that has instance variables "query" and "weight". These variables are of type String and long respectively and are initialized using the constructors "Tern(String query)" and "Tern(String query, long weight)".

The "toString()" method returns a string that concatenates the weight and query values separated by a tab. The "compareTo(Term other)" method returns an integer that indicates the relative order of two instances of the "Term" class based on their query values.

In summary, the "Term" class represents a term with a query string and weight. The class provides methods for initializing, retrieving, and comparing these values. The "query" and "weight" instance variables are used throughout the class and the "compareTo()" method makes use of the "query" variable to determine the relative order of two instances of the "Term" class.
Hi! I'd be happy to help with your question. Here's a summary of the requirements:

1. You need to create a class named "Term" with two instance variables: "query" (of type String) and "weight" (of type long).

2. You need to provide two constructors for the Term class: one that accepts a single argument "query" (of type String) and another that accepts both "query" (String) and "weight" (long). Both constructors should initialize the instance variables with appropriate values.

3. You need to implement a method called "toString()" that returns a string representation of the Term object. This string should contain the "weight" and "query" separated by a tab.

4. Lastly, you need to implement a method named "compareTo()" that accepts a Term object as an argument. This method should return a negative, zero, or positive integer based on whether the "query" of the current instance is less than, equal to, or greater than the "query" of the input Term object.

Remember to implement your solution following the guidelines provided to ensure a professional and accurate outcome.

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Answer:

def calculate_dose(weight):

if weight < 5.2:

dose = 1.25

elif weight >= 5.2 and weight < 7.9:

dose = 2.5

elif weight >= 7.9 and weight < 10.4:

dose = 3.75

elif weight >= 10.4 and weight < 15.9:

dose = 5

elif weight >= 15.9 and weight < 21.2:

dose = 7.5

else:

dose = 10

return dose

# example usage

print(calculate_dose(8)) # output: 2.5

print(calculate_dose(18)) # output: 7.5

print(calculate_dose(25)) # output: 10

:Here's the Python code to solve the problem:

```python

def calculate_dose(weight):

if weight < 5.2:

dose = 1.25

elif weight >= 5.2 and weight < 7.9:

dose = 2.5

elif weight >= 7.9 and weight < 10.4:

dose = 3.75

elif weight >= 10.4 and weight < 15.9:

dose = 5

elif weight >= 15.9 and weight < 21.2:

dose = 7.5

else:

dose = 10

return dose

# example usage

print(calculate_dose(8)) # output: 2.5

print(calculate_dose(18)) # output: 7.5

print(calculate_dose(25)) # output: 10

```

In this code, we define a function called `calculate_dose` that takes in the weight of the child as a parameter. The function then checks the weight against the weight ranges in the table provided and returns the corresponding dose for that weight.

We can then call this function for each of the provided examples (8 kg, 18 kg, and 25 kg) and print out the result. The output of the function for each example is shown in the comments.

There are two data hazards in this code segment:
1. The ADD instruction at the beginning uses the value in X2, which is also used in the subsequent SUB instruction. This creates a RAW (Read-After-Write) hazard.
2. The LDUR instruction uses the value in X5, which is used as the base register for the LDUR instruction and also used as a source register for the ADD instruction. This creates a WAR (Write-After-Read) hazard.
Hi! I'd be happy to help you with your question. Let's analyze the code segment and identify the number of data hazards present:

1. ADD X1, X2, X3
2. SUB X2, X1, X4
3. LDUR X3, [X5, #10]
4. ADD X6, X3, X2

In this code segment, there are 2 data hazards:

1. Between instruction 1 (ADD X1, X2, X3) and instruction 2 (SUB X2, X1, X4), there is a data hazard as the result of the first instruction, X1, is needed as an input for the second instruction.

2. Between instruction 3 (LDUR X3, [X5, #10]) and instruction 4 (ADD X6, X3, X2), there is a data hazard as the result of the third instruction, X3, is needed as an input for the fourth instruction.

In summary, there are 2 data hazards present in this code segment.

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The two actions available for antivirus security profiles are "block IP" and "alert".

When a security profile is created for antivirus, it is important to determine how it will respond to potential threats. Blocking the IP of a known malicious source can prevent any potential attacks from that source. Additionally, setting up alerts can notify administrators of potential threats so they can investigate further and take necessary actions to protect the network. It is important to regularly review and update antivirus security profiles to ensure that they are effective in protecting against evolving threats.

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In Perl, a variable that starts with $ is a scalar variable, which means it can hold a single value at a time, whether it is numeric or nonnumeric. There is no restriction on the value of a scalar variable, so it can be zero or any other value. Therefore, options b, c, and d are correct.

All of the options (a), (b), (c), and (d) are correct.In Perl, a variable that starts with the symbol $ is a scalar variable, which means it can hold a single value. This value can be numeric or non-numeric, and it can be zero or non-zero. Therefore, all the options listed are correct.For example, the following code creates a scalar variable $value and assigns it a value of zero:

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Answer: The disk can hold a maximum of 244,140,625 blocks. Brainliest?

Explanation:

To compute the disk capacity in terms of the maximum number of blocks it can hold, we need to know the block size and the total number of blocks the disk can store.

Let's assume that the disk has a block size of 4096 bytes and a total capacity of 1 terabyte (TB), which is equal to 1,000,000,000,000 bytes.

To calculate the number of blocks, we first need to convert the total capacity from bytes to blocks by dividing it by the block size:

1,000,000,000,000 bytes / 4096 bytes per block = 244,140,625 blocks

Therefore, the disk can hold a maximum of 244,140,625 blocks.

The function "func1" is a recursive implementation of a function that calculates the product of two integers 'm' and 'n'. It uses the following recursive equation:

func1(m, n) = m, if n == 1
func1(m, n) = m * func1(m, n-1), otherwise

The time complexity of this function is O(n), where 'n' is the second input parameter. This is because the function calls itself 'n' times, decrementing 'n' by 1 in each call until it reaches 1.

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These functions will work for any Tree type with arbitrary types a and b.

To define the functions leaves and branches for the Tree a b type in Haskell Textbook: "Programming in Haskell, 2nd Ed.", by Graham Hutton, we can use pattern matching to traverse the tree and count the number of leaves and branches.

Here are the function definitions:

leaves :: Tree a b -> Int
leaves Leaf = 1
leaves (Node _ left right) = leaves left + leaves right

branches :: Tree a b -> Int
branches Leaf = 0
branches (Node _ left right) = 1 + branches left + branches right

The leaves function checks if the input is a Leaf and returns 1, otherwise it recursively calls itself on the left and right subtrees and adds their results together.

The branches function checks if the input is a Leaf and returns 0, otherwise it recursively calls itself on the left and right subtrees and adds their results together, plus 1 for the current internal node.

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The sorting algorithm described is Bubble sort. Bubble sort repeatedly examines neighboring elements and swaps adjacent elements if they are in the wrong order until no more swaps are necessary.

Bubble sort is a simple sorting algorithm that works by repeatedly swapping adjacent elements if they are in the wrong order. The algorithm works as follows:

The algorithm gets its name from the fact that larger elements "bubble" to the end of the list, while smaller elements "sink" to the beginning. Bubble sort has a worst-case and average-case time complexity of O(n^2), where n is the number of elements to be sorted. Despite being simple to understand and implement, bubble sort is generally not as efficient as other sorting algorithms, particularly for large datasets.

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It is not clear what you mean by "segments" and "tables" in this context, as there are multiple types of segments and tables in computer systems. However, assuming you are referring to memory segments and page tables:

If the segments are limited to 4 kib page size, this means that each segment can be divided into multiple 4 kib pages for paging purposes. Each page table entry typically contains information about the physical memory address of the page, as well as other control bits such as permission bits and dirty bits.
The size of each page table entry depends on the system architecture and the number of control bits needed. In some systems, a page table entry may be 4 bytes or less, while in others it may be larger.
Therefore, whether 4 bytes is large enough for all page table entries in the segment tables depends on the specific system architecture and the number of control bits needed for each entry. In general, however, it is possible for page table entries to be 4 bytes or smaller.

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True. On the Field Duty page, the Update Details button is used to change dates.

This button allows users to edit and update the details of a field duty assignment, including the start and end dates of the assignment. It is important to ensure that the dates are accurately updated to avoid any scheduling conflicts or confusion.

True. On the Field Duty page, the Update Details button is used to change dates. This function allows users to modify date information for a specific field duty assignment. To use the button, follow these steps:

1. Navigate to the Field Duty page.
2. Locate the assignment you wish to modify.
3. Click the Update Details button.
4. In the provided fields, adjust the dates as needed.
5. Confirm your changes by clicking the appropriate button.

By using the Update Details button, users can ensure their field duty schedule remains accurate and up-to-date.

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There are a total of 84 zip codes whose digits are in strictly increasing order.

In the United States, there are 84 zip codes whose digits are in strictly increasing order. These zip codes consist of 5 digits each and range from 01234 to 56789. To arrive at this number, we can consider that the first digit can be any number from 0 to 5 since we need at least 5 digits to form a strictly increasing order. For the second digit, it can be any number from the first digit plus 1 to 9, and similarly for the third, fourth, and fifth digits. Using this logic, we can count the number of possible combinations and arrive at a total of 84 zip codes. It's worth noting that these zip codes are scattered across several states and are not concentrated in any particular region.

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Here is an algorithm that can compute the kth smallest element of a set of n distinct integers in O(n + k log n) time:

1. First, sort the set of n integers using an efficient sorting algorithm such as quicksort or mergesort. This will take O(n log n) time.

2. Once the set is sorted, we can use binary search to find the kth smallest element. Begin by setting two pointers, left and right, to the beginning and end of the set respectively.

3. While left is less than or equal to right, calculate the middle index using (left + right) / 2.

4. Count the number of elements in the set that are less than or equal to the value at the middle index using a loop. This will take O(n) time.

5. If the count is less than k, then the kth smallest element must be to the right of the middle index. Update the left pointer to middle + 1 and continue the search.

6. If the count is greater than or equal to k, then the kth smallest element must be to the left of the middle index. Update the right pointer to middle - 1 and continue the search.

7. When left and right cross each other, the value at the right pointer will be the kth smallest element.

Overall, this algorithm will take O(n log n) time for sorting and O(k log n) time for binary search, which gives us a total runtime of O(n + k log n).
Hi! I'd be happy to help you develop an algorithm to find the kth smallest element in a set of n distinct integers within O(n + k log n) time. The algorithm can be divided into the following steps:

1. Convert the set of n distinct integers into a min-heap data structure.
2. Initialize a variable called 'kthSmallest' to store the kth smallest element.
3. Iterate k times, performing the following steps:
  a. Extract the minimum element from the min-heap and store it in 'kthSmallest'.
  b. Remove the extracted element from the min-heap and restructure the heap accordingly.
4. Return the value stored in 'kthSmallest' as the final result.

This algorithm utilizes a min-heap data structure, which ensures that each element removal takes O(log n) time. Therefore, performing this k times will result in a complexity of O(k log n). Since the initial conversion of the set into a min-heap takes O(n) time, the total time complexity for this algorithm is O(n + k log n).

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a. 1NF (First Normal Form) A table where all attributes are dependent on the primary key and are independent of each other, and no row contains two or more multivalued facts about an entity.

First Normal Form (1NF) is a property of a relational database table where every attribute in the table is atomic, meaning it cannot be divided further into smaller parts. Additionally, every attribute must be uniquely identified by the primary key, which means each attribute should be dependent on the primary key and not on any other attribute in the table. The values in a row should not contain any repeating groups or multiple values in a single cell. Ensuring that a table satisfies 1NF helps to avoid data redundancy and anomalies during data manipulation operations such as inserts, updates, and deletes.

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To write a function "cumulative_sum" that returns a new tree with each value being the sum of all values in the corresponding subtree of the old tree, you can follow these steps:

1. Define the function "cumulative_sum" that takes a tree as its input.
2. Check if the input tree is empty. If so, return an empty tree.
3. Calculate the sum of the current node and all its child nodes by recursively calling the "cumulative_sum" function.
4. Create a new node with the calculated sum and construct the new tree by recursively building the subtrees.
5. Return the new tree.

Here's the step-by-step implementation in Python:

```python
class TreeNode:
   def __init__(self, value=0, left=None, right=None):
       self.value = value
       self.left = left
       self.right = right

def cumulative_sum(tree: TreeNode) -> TreeNode:
   # Step 2: Check if the input tree is empty, return an empty tree
   if not tree:
       return None

   # Step 3: Calculate the sum of the current node and all its child nodes
   left_sum = cumulative_sum(tree.left)
   right_sum = cumulative_sum(tree.right)
   total_sum = tree.value + (left_sum.value if left_sum else 0) + (right_sum.value if right_sum else 0)

   # Step 4: Create a new node with the calculated sum and construct the new tree
   new_tree = TreeNode(total_sum, left_sum, right_sum)

   # Step 5: Return the new tree
   return new_tree
```

This function will create a new tree with the cumulative sum of each subtree from the old tree.

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In the file pp6c.cpp, there is a function called readline that uses a do while loop to read all characters from standard input, including whitespace characters, until the function reads the newline character '\n'. This function essentially reads an entire line of text from the user's input, including any spaces or tabs that may be present.

To use the readline function, you'll need to create a main function that prompts the user to enter a word, reads that word from standard input using cin or getline, and then calls the readline function to read past all the remaining characters on the line. Once the readline function has finished reading the line, the main function can then prompt the user to enter another word and read it from standard input as well.
Finally, the main function should print out both words that were entered by the user, which can be done using cout or printf. This will allow you to see the output of the program and ensure that it is working correctly.
Overall, the readline function is a useful tool for reading input from the user and processing it in a way that allows you to easily separate out individual words or lines of text. By including whitespace characters in the input, you can ensure that your program is able to handle a wide range of user inputs, regardless of how they are formatted.

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the PDA works as follows: it starts by pushing a Z0 onto the stack and reading the input symbol by symbol. If the symbol is a 0 or 1, it pushes it onto the stack.

When it reaches the # symbol, it starts popping symbols from the stack and comparing them with the input symbols after the #. If the input symbol matches the stack symbol, it pops the stack symbol and moves on to the next input symbol. If at any point the input symbol does not match the stack symbol, the PDA rejects the string. If it reaches the end of the input while the stack is empty, it accepts the string.

To show that the language L = {x#y| x, y €{0,1}* and x + y} is context-free, we can construct a pushdown automaton (PDA) that recognizes L.

The idea is to use the PDA to first read and store the string x on the stack, and then compare each bit of x with the corresponding bit of y while popping the stack. If at any point the bit in y does not match the bit in x, or if y has more bits left after all bits of x have been read, then the PDA rejects the string. Otherwise, if the PDA reaches the end of the input while the stack is empty, it accepts the string.

Here is a formal description of the PDA:

The PDA has a single state q, an initial stack symbol Z0, and a transition function δ defined as follows:

a. δ(q, ε, Z0) = {(q, Z0)} (push Z0 onto the stack)

b. For each a ∈ {0, 1}, δ(q, a, Z0) = {(q, aZ0)} (push a onto the stack)

c. For each a ∈ {0, 1}, δ(q, a, a) = {(q, ε)} (pop the stack)

d. For each a, b ∈ {0, 1}, a ≠ b, δ(q, a, b) = {(reject, ε)} (reject the string)

The PDA accepts by empty stack, i.e., the final state is an accepting state and the stack is empty.

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The given statement "multiprogramming systems are not necessarily timesharing system" is true because multiprogramming systems refer to a computer system that is capable of running multiple programs simultaneously.

Timesharing systems, on the other hand, refer to a specific type of multiprogramming system that allows multiple users to access the computer system at the same time, with each user having the illusion of having the system to themselves. Therefore, while timesharing systems are a type of multiprogramming system, not all multiprogramming systems are timesharing systems.

On the other hand, timesharing refers to a specific type of multiprogramming system where multiple users can access the same computer system at the same time. In a timesharing system, the CPU switches rapidly between different user sessions, giving the illusion that each user has exclusive access to the system.

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To solve this error, you need to either remove the aggregate function or the subquery from the GROUP BY clause or use a subquery to perform the aggregation and then join the result with the original table.

This error occurs when you try to use an aggregate function or a subquery in the GROUP BY clause of your SQL query.  

For example, instead of using:

SELECT column1, SUM(column2)
FROM table1
GROUP BY SUM(column2);

You can use:

SELECT column1, SUM(column2)
FROM table1
GROUP BY column1;

Alternatively, you can use a subquery to perform the aggregation and then join the result with the original table like this:

SELECT table1.column1, subquery.sum_column2
FROM table1
JOIN (SELECT column1, SUM(column2) AS sum_column2
     FROM table1
     GROUP BY column1) subquery ON table1.column1 = subquery.column1;

This will allow you to perform the aggregation and group the results without encountering the error message.

To solve the issue "cannot use an aggregate or a subquery in an expression used for the group by list of a group by clause", follow these steps:

1. Identify the problematic aggregate function or subquery in your SQL query. Aggregate functions are operations like COUNT, SUM, AVG, MIN, or MAX. A subquery is a query nested within another query.

2. Remove the aggregate function or subquery from the GROUP BY clause. The GROUP BY clause is used to group rows with the same values in specified columns into a single row.

3. If necessary, move the aggregate function or subquery to the SELECT or HAVING clause, where they are allowed.

4. Ensure the remaining columns in the GROUP BY clause are non-aggregated and not part of a subquery.

5. Test your modified query to confirm the error is resolved and the desired result is achieved.

Remember, the GROUP BY clause should only contain non-aggregated columns that you want to group your data by. Aggregate functions and subqueries should be placed in the SELECT or HAVING clause of your SQL query.

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Hi! To remove the "Population" column from the "Country" table, you can use the "ALTER TABLE" statement with the "DROP COLUMN" command. Here's the code:

```
ALTER TABLE Country
DROP COLUMN Population;
```

This code will remove the "Population" column from the "Country" table, and the data stored in that column will be deleted.

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Hi! To remove the "Population" column from the "Country" table, you can use the "ALTER TABLE" statement with the "DROP COLUMN" command. Here's the code:

```
ALTER TABLE Country
DROP COLUMN Population;
```

This code will remove the "Population" column from the "Country" table, and the data stored in that column will be deleted.

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The percentage of students who failed is calculated in SQL by counting the number of students who received a grade other than an A, B, or C, dividing that number by the total number of students, and multiplying the result by 100.

Database management systems are pieces of software that are used to store, retrieve, and analyze data. (DBMS). A DBMS, which serves as an interface between users and the databases, allows users to create, read, update, and remove data from databases.

SELECT enrollment.cid from enrollment.section from

      (COUNT(CASE WHEN enrollment.grade = "D" OR "F" THEN 1 END) / COUNT(*)) * 100

      When "Percent Failed,"

enrollment FROM

GROUP BY enrol.cid AND enrol.section;

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Question:

"Given the following tables:

• students(sid,name,age,gpa)

• courses(cid,deptid, description)

• professors(ssn,name,address,phone,deptid)

• enrollment(sid,cid,section,grade). cid makes reference to the courses table.

• teaches(cid,section,ssn). cid, section makes reference to the enrollment table

Provide SQL instructions for each of the following questions:

10. Assume grades are A, B, C, D, F where D and F are failing grades. For each course (section) find the percentage of students that failed the course."

A student can have only one permanent address and phone number.

A department can have only one office and phone number.

A course can be offered by only one department.

Snum -> Sname, Ssn, Sc_addr, Sc_phone, Sp_addr, Sp_phone, Bdate, Sex, Class, Major_code, Minor_code, Prog

Ssn -> Sname, Snum, Sc_addr, Sc_phone, Sp_addr, Sp_phone, Bdate, Sex, Class, Major_code, Minor_code, Prog

Dcode -> Dname, Doffice, Dphone, Dcollege

Cnum -> Cname, Cdesc, Credit, Level, Cdept

(Sec_course, Semester, Year, Sec_num) -> Iname

(Ssn, Sec_course, Semester, Year, Sec_num) -> Grade

Student(Snum, Sname, Ssn, Sc_addr, Sc_phone, Sp_addr, Sp_phone, Bdate, Sex, Class, Major_code, Minor_code, Prog)

Key: Snum

Department(Dcode, Dname, Doffice, Dphone, Dcollege)

Key: Dcode

Course(Cnum, Cname, Cdesc, Credit, Level, Cdept)

Key: Cnum

Section(Sec_course, Semester, Year, Sec_num, Iname)

Key: (Sec_course, Semester, Year, Sec_num)

Foreign key: Sec_course references Course(Cnum)

Grade(Ssn, Sec_course, Semester, Year, Sec_num, Grade)

Key: (Ssn, Sec_course, Semester, Year, Sec_num)

Foreign key: Ssn references Student(Ssn), Sec_course references Course(Cnum), (Sec_course, Semester, Year, Sec_num) references Section(Sec_course, Semester, Year, Sec_num)

A student can have only one permanent address and phone number.

A department can have only one office and phone number.

A course can be offered by only one department.

An instructor can teach only one section of a course during a semester/year.

A grade record refers to a student who has taken the course, and not necessarily the student who is currently enrolled in the course.

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