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GenaCL600 [577]
3 years ago
5

Read the argument below and determine the underlying principle that was used to come to the conclusion presented: It is recommen

ded that your diet should include at least 3-5 servings of vegetables a day. A serving of vegetables can be 1 cup of raw leafy greens, 1/2 cup of other cooked or raw vegetables, or 3/4 cup of vegetable juice. A diet that has less than 3-5 servings of vegetables a day may lead to health problems. Which other argument uses the same underlying principle as the argument above?
a. Driving a car can be dangerous, but if you learn how to properly drive a car then you can significantly reduce the risk involved,
b. Driving a car can be dangerous, therefore it's recommended that people not drive.
c. Driving a car can be dangerous and that is why states require that drivers pass a test to be licensed to drive.
Computers and Technology
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

Hence option a is the correct one. Driving a car can be dangerous, but if you learn how to properly drive a car then you can significantly reduce the risk involved,

Explanation:

a) Driving a car can be dangerous, but if you learn how to properly drive a car then you can significantly reduce the risk involved.

As it belongs How to be a good car driving without risk as equivalent diet concept as a base.

Less than 3-5 servings of vegetables a day not taken equivalent car driving dangerous if no proper driving.

Hence option 1 is valid.

b) is wrong as it has negative feedback regarding the base case.

c) is a suggestion for the strong part which is also the wrong option

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Answer:se muestran los documentos recientes, la de iTunes muestra links para abrir la iTunes Store o reproducir toda nuestra colección, etc

Explanation:

4 0
2 years ago
Software (often on firmware) designed to make physical products and devices "smarter" by doing things like sharing usage informa
kolezko [41]

Answer:

embedded system

Explanation:

Based on the scenario being described within the question it can be said that the type of software that is being described is known as an embedded system. This is actually a combination of both hardware and software that focuses on a specific function which is later implemented into a much larger system to allow it to become "smarter", by performing more complex tasks, which would otherwise not be possible.

5 0
3 years ago
[1] Please find all the candidate keys and the primary key (or composite primary key) Candidate Key: _______________________ Pri
AVprozaik [17]

Answer:

Check the explanation

Explanation:

1. The atomic attributes can't be a primary key because the values in the respective attributes should be unique.

So, the size of the primary key should be more than one.

In order to find the candidate key, let the functional dependencies be obtained.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing ->  Emp_ID

Course_ID -> Course Name

Course_Name ->  Course_ID

Date_Completed -> Course_Name

Closure of attribute { Emp_ID, Date_Completed } is { Emp_ID, Date_Completed , Name, DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Name , Date_Completed } is { Name, Date_Completed , Emp_ID , DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { DeptID, Date_Completed } is { DeptID, Date_Completed , Emp_ID,, Name, , Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Marketing, Date_Completed } is { Marketing, Date_Completed , Emp_ID,, Name, DeptID , Salary, Course_Name, Course_ID}.

So, the candidate keys are :

{ Emp_ID, Date_Completed }

{ Name , Date_Completed }

{ DeptID, Date_Completed }

{ Marketing, Date_Completed }

Only one candidate key can be a primary key.

So, the primary key chosen be { Emp_ID, Date_Completed }..

2.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing ->  Emp_ID

Course_ID -> Course Name

Course_Name ->  Course_ID

Date_Completed -> Course_Name

3.

For a relation to be in 2NF, there should be no partial dependencies in the set of functional dependencies.

The first F.D. is

Emp_ID -> Name, DeptID, Marketing, Salary

Here, Emp_ID -> Salary ( decomposition rule ). So, a prime key determining a non-prime key is a partial dependency.

So, a separate table should be made for Emp_ID -> Salary.

The tables are R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

and R2( Emp_ID , Salary)

The following dependencies violate partial dependency as a prime attribute -> prime attribute :

Name -> Emp_ID

DeptID -> Emp_ID

Marketing ->  Emp_ID

The following dependencies violate partial dependency as a non-prime attribute -> non-prime attribute :

Course_ID -> Course Name

Course_Name ->  Course_ID

So, no separate tables should be made.

The functional dependency Date_Completed -> Course_Name has a partial dependency as a prime attribute determines a non-prime attribute.

So, a separate table is made.

The final relational schemas that follows 2NF are :

R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

R2( Emp_ID , Salary)

R3 (Date_Completed, Course_Name, Course_ID)

For a relation to be in 3NF, the functional dependencies should not have any transitive dependencies.

The functional dependencies in R1(Emp_ID, Name, DeptID, Marketing, Date_Completed) is :

Emp_ID -> Name, DeptID, Marketing

This violates the transitive property. So, no table is created.

The functional dependencies in R2 (  Emp_ID , Salary) is :

Emp_ID -> Salary

The functional dependencies in R3 (Date_Completed, Course_Name, Course_ID) are :

Date_Completed -> Course_Name

Course_Name   ->  Course_ID

Here there is a transitive dependency as a non- prime attribute ( Course_Name ) is determining a non-attribute ( Course_ID ).

So, a separate table is made with the concerned attributes.

The relational schemas which support 3NF re :

R1(Emp_ID, Name, DeptID, Course_ID, Marketing, Date_Completed) with candidate key as Emp_ID.

R2 (  Emp_ID , Salary) with candidate key Emp_ID.

R3 (Date_Completed, Course_Name ) with candidate key Date_Completed.

R4 ( Course_Name, Course_ID ).  with candidate keys Course_Name and Course_ID.

6 0
3 years ago
Given a Student class, create a class with following characteristics:
Kay [80]

Answer:

ssume that,

Maximum “students” count can be 10.

*Driver Class*

*Solution class*

import java.util.*;

class Student {

private String name;

private int rollNo;

public String getName() {}

public void setName(String name) {}

public int getRollNo() {}

public void setRollNo(int rollNo) {}

};

class ClassRoom {

private int i;

private Student[] students;

public void addStudent(String name, int rollNo) {}

public Student[] getAllStudents() {}

};

8 0
3 years ago
A Lost link is an interruption or loss of the control link between the control station and the unmanned aircraft, preventing con
Vlad [161]

Answer:

There is nothing to answer from this statement.

Explanation:

Can you rephrase the statement into question?

4 0
3 years ago
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