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vodka [1.7K]
3 years ago
11

Using SQL

Computers and Technology
1 answer:
lesantik [10]3 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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The superclass Calculator contains: a protected double instance variable, accumulator, that contains the current value of the ca
yawa3891 [41]

Answer:

The following program are written in JAVA Programming Language.

//inherit the Calculator class

public class CalculatorWithMemory extends Calculator {  

   private double memory = 0.0;    //initialize double type variable

   public void save() {   //define function

       memory = accumulator;    

   }

   public void recall() {   //define function

       accumulator = memory;

   }

   public void clearMemory() {   //define function

       memory = 0;     //initialize the value

   }

   public double getMemory() {  

       return memory;    // return the value in "memory" variable

   }

}

Explanation:

Here, we inherit the property of the "Calculator" class.

Then, we define the private double type variable "memory" and assign value 0.0.

Then we set the function "save()" inside it we assign the value of "memory" in "accumulator" and close the function.

Then, we define the function "recall()" inside it we assign the value of "accumulator" in "memory" and close the function.

Then we set the function "clearMemory()" inside it we assign "memory" to 0.

After all, we set the double type function "getMemory()" inside we return the value of the "memory".

7 0
3 years ago
Complete the sentence.
mamaluj [8]

Answer:

We need context, it could be several answers

Explanation:

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3 years ago
What is metrical task system algorithm?? and can we use that in online shopping project??
jeyben [28]

Answer:

Metrical task system algorithm is the online algorithm that is used for organizing the online problems like k-server issues, paging issues etc.This task system works in the form of metrics to decrease the complete cost  experienced due to processing of the operation and analyzing the competition.

It can be used for the online shopping project for the analyzing the comparison between the performance on basis of online and offline trends and then optimization can take place according to the the results.

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3 years ago
A document format is
anyanavicka [17]

Answer:

A document file format is a text or binary file format for storing documents on a storage media, especially for use by computers. There currently exist a multitude of incompatible document file formats.

Explanation:

8 0
3 years ago
Read 2 more answers
G The method of mapping where each memory locationis mapped to exactly one location in the cache is
Otrada [13]

Answer:

Direct Mapped Cache

Explanation:

Given that a Direct Mapped Cache is a form of mapping whereby each main memory address is mapped into precisely one cache block.

It is considered cheaper compared to the associative method of cache mapping, and it is faster when searching through it. This is because it utilizes a tag field only.

Hence, The method of mapping where each memory location is mapped to exactly one location in the cache is "Direct Mapped Cache"

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