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Helga [31]
3 years ago
11

____ is a consistent relational database state in which every foreign key value also exists as a primary key value.​ a. ​ Refere

ntial integrity b. ​ First normal form (1NF) c. ​ Database synchronization d. ​ Function dependency
Computers and Technology
1 answer:
maria [59]3 years ago
4 0

Answer:

The correct answer is Option A (Referential integrity)

Explanation:

When a relational database table is in ​first normal form, that means it has no repeating fields or groups of fields, and hence all rows have the same columns, while if a relational database table is in second normal form, it implies that every non-key field is functionally dependent on the primary key. If can be in the third normal form if no non-key field is functionally dependent on any other non-key field.​

A relational database on its own is a universal approved database model whose data is stored in tables divided into records and fields that serve as an information unit that organizes data points for easy access.

In the relational database, foreign keys are being checked to reference the primary key and enforce referential integrity so as to ensure that the foreign key must have a matching primary key. It means the reference from a row in one table to another table must be valid. Referential integrity concerns the concept of a foreign key normally enforced by the database management system.

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Yes

Explanation:

8 0
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The ---------------initiates a message by encoding theidea (or a thought) in words or symbols and sends it to areceiver.ChannelS
saw5 [17]

Answer:

None of the given options

Explanation:

The sender initiates a message by encoding theidea (or a thought) in words or symbols and sends it to a receiver.

8 0
3 years ago
Write the pseudocode for this flowchart
MrMuchimi

Answer:

Explanation:

class TimeToSleep() {

  main bunch of stuff (string argos) {

       int age;

       string comedy;

       bool guess;

        public bool imTheMasterMethod() {

           guess = true;

           while (guess) {

              comedy = "You forgot to put the flowchart, you meathead!";

              println(comedy);

               

                scan("%d", &age);

                if (age < 18) {

                    println("Go to sleep kiddo!");

                }

           }

        }

   }

}

       

6 0
2 years ago
1. Write programming code in C++ for school-based grading system. The program should accept the Subject and the number of studen
satela [25.4K]

In this program, I am using the school-based grading system and the program should accept the subject and the number of students.

Program approach:-

  • Using the necessary header file.
  • Using the standard I/O namespace function.
  • Define the main function.
  • Declare the variable.
  • Display enter obtain marks in 5 subjects.
  • Return the value.

Program:-

//header file

#include<iostream>

//using namespace

using namespace std;

//main method

int main()

{

//declare variable

  int j;

  float mark, sum=0, a;

//display enter obtain marks in 5 subjects

  cout<<"Enter Marks obtained in 5 Subjects: ";

  for(j=0; j<5; j++)

  {

      cin>>mark;

      sum = sum+mark;

  }

  a = sum/5;

//display grade

  cout<<"\nGrade = ";

  if(a>=91 && a<=100)

//display a1

      cout<<"a1";

  else if(a>=81 && a<91)

//display a2

      cout<<"a2";

  else if(a>=71 && a<81)

      cout<<"b1";

  else if(a>=61 && a<71)

      cout<<"b2";

  else if(a>=51 && a<61)

//display c1

      cout<<"c1";

  else if(a>=41 && a<51)

//display c2

      cout<<"c2";

  else if(a>=33 && a<41)

//display d

      cout<<"d";

  else if(a>=21 && a<33)

//display e1

      cout<<"e1";

  else if(a>=0 && a<21)

//display e2

      cout<<"e2";

  else

//display invalid

      cout<<"Invalid!";

  cout<<endl;

//return the value

  return 0;

}

Learn more grading system

brainly.com/question/24298916

7 0
2 years ago
Select the correct answer.
irinina [24]

Answer:

A

Explanation:

6 0
3 years ago
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