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vodka [1.7K]
4 years ago
11

Using SQL

Computers and Technology
1 answer:
lesantik [10]4 years ago
7 0

Answer:

Following are the code to this question:

/*using the select statement, that selects column name from the table blog.posts */  

SELECT blog.posts.user_id, blog.posts.body, users.name/*column name user_id, body, name*/  

FROM blog.posts/* use table name blog.posts*/

RIGHT OUTER JOIN users ON blog.posts.user_id = users.id;/*use right join that connect table through user_id*/

Explanation:

In the structured query language, RIGHT JOIN  is used to recovers from both the right side of the table both numbers, although the left table has no sets. It also ensures that even if the 0 (null) documents are linked inside this left table, its entry will always return the outcome row, but still, the number of columns from its left table will be NULL.

In the above-given right join code, the select statements used that selects the column names "user_id, body, and the name" from the table "blog. posts" and use the right join syntax to connect the table through the id.    

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Calculating mean for even number and use while loop<br>pleas help me ​
vladimir2022 [97]

Answer:

Here is my answer in Javascript

num = 0;   // Use to calcate the even numbers

loop = 10; // Use for the highest even number that will be calcated for

index = loop/2; // Calcate the size of the array based upon how many loops their

let arr = [index]; //Create array to store the even numbers

let i = 0; // Use to keep track of which on what number in the while loop we are on  

let total = 0; //Used to add up all of the even numbers

let mean = 0; //Used to calcate the mean of all even numbers

do {

 i = i + 1; //Keep track of what loop we are on

 num = num + 2; //Used to calcate the even number

 arr.push(num); //Push the num into a array

 total = total + arr[i]; //Calcate the total of the array

 mean = total / i; //Calcate the mean

}

while (num != loop);

//Output the result

console.log(mean);

8 0
3 years ago
Which of the following is not a property of a WAN:
docker41 [41]

Answer:

Option d is the correct answer for the above question.

Explanation:

  • WAN is a type of network that facilities network connection all over the world. It can connect every computer which is in anywhere in the world while the other technology like LAN and MAN is used for small area locations.
  • The above question asked that about that statement which is not the property of WAN and that is option d because it states that WAN is used to connect only small areas of computers, but it can connect all the computers of the world, while the other property is valid for WAN.
6 0
3 years ago
What is the channel capacity for a teleprinter channel with a 300 Hz bandwidth and a signal-to-noise ratio of 30dB, where the no
wolverine [178]

Answer:

The answer is 2988 bits per seconds

Explanation:

Solution

Given that:

Bandwidth (B) = 300Hz

Signal to noise ratio (SNR) = 30dB

Now let C = channel capacity

Using  Deubel formula we have the following:

SNR db = 10* log (SNR)

30 =10* log (SNR)

So,

SNR =log^⁻1 (3)

SNR = (10)^3

SNR = 1000

Thus SNR =1000

Now

Applying the Shannon's equation

C = B * log₂ ( 1 + SNR)

C = 300 * log₂ ( 1 + 1000)

C = 300 * log₂ (1001)

C = 300 * 9.96

C =2988

Hence the capacity of the channel for teleprinter channel is 2988 bits per second.

8 0
4 years ago
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Setler79 [48]

Answer:

I believe this is a graph question which would be impossible to do on brainly. Butttt, if so, -4x means you would go to the right 4, and the 6 means you would go up 6

Hope this helps:)

if you want to further explain question I'd be glad to help :))

5 0
3 years ago
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BigorU [14]

Answer:

wh,,what?

Explanation:

3 0
3 years ago
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