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Akimi4 [234]
3 years ago
7

Consider an entity set Person, with attributes social security number (ssn), name, nickname, address, and date of birth(dob). As

sume that the following business rules hold: (1) no two persons have the same ssn; (2) no two persons have he same combination of name, address and dob. Further, assume that all persons have an ssn, a name and a dob, but that some persons might not have a nickname nor an address.
A) List all candidate keys and all their corresponding superkeys for this relation.
B) Write an appropriate create table statement that defines this entity set.
Computers and Technology
1 answer:
lisov135 [29]3 years ago
4 0

Answer:

\pi

Explanation:

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Aleksandr [31]

Answer:

answer b

is correct

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3 years ago
How do you debug an Xcode project?
likoan [24]

Answer:

in my opinion i think it is "C" by clicking on the run button...

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Problem: Write the Python code of a program called ComputeSquare that asks the user to enter the length of the side of the squar
Lera25 [3.4K]
<h2>Solution :</h2>

The given problem is solved in Python.

def ComputeSquare():

side = float(input('Enter the side of the square: '))

if side > 0:

perimeter = 4 * side

area = side * side

print('Perimeter of the square is:',

perimeter, 'unit.')

print('Area of the square is:', area, 'square unit.')

<h3> else:</h3>

print('Invalid input.')

ComputeSquare()

<h2>Explanation :-</h2>

  • In this program, we create a function ComputeSquare() to calculate the perimeter and area of a square.

  • The function asks the user to enter the side of the square. The side is then stored in a variable.

  • Now, we check whether the side is greater than 0 or not using if-else statement.

  • If the condition is true, the perimeter and area is calculated which is displayed using print() statement.

  • If the condition is false, the else blocks executes printing the error message.

<h3>Refer to the attachment for output.</h3>

6 0
3 years ago
I NEED HELP QUICK
Serjik [45]

Answer: keeps confidential documents secure,

displays a GUI, allocates the computer's resources, and retrieves files

Explanation:

The operating system can be defined as the software installed in the system that provides the information and services to the users by controlling the hardware, software resources, and regulates the computer programs. It runs the applications and programs in the system, displays the graphic user interface for the services, stores, manipulates, and retrieves files. It prevents the unauthorized access to the data and programs by using passwords thus provides the security to the system and documents.

8 0
3 years ago
To maintain your body temperature, your body converts chemical potential energy into thermal energy T or F
PilotLPTM [1.2K]
True
This is physics btw
CPE --> TE
4 0
3 years ago
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