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MAXImum [283]
4 years ago
3

Database __________ , which is the logical design of the database, and the database _______,which is a snapshot of the data in t

he database at a given instant in time.
A. Relation, Domain
B. Relation, Schema
C. Instance, Schema
D. Schema, Instance
Computers and Technology
1 answer:
Vikki [24]4 years ago
3 0

Answer:

D. Schema, Instance.

Explanation:

Database schema, which is the logical design of the database, and the database instance, which is a snapshot of the data in the database at a given instant in time.

In database management, the term "schema" is used to denote a representation of data while the term "instance" is used to denote an instance of time.

A database schema is a structure which is typically used to represent the logical design of the database and as such represents how data are stored or organized and the relationships existing in a database management system. There are two (2) main categories of a database schema; physical database schema and logical database schema.

A database instance is a snapshot of the data in the database at a given instant in time and as such represents an operational database by following the conditions, validation and constraints set for a database management system.

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Write a program whose input is two integers and whose output is the two integers swapped. Ex: If the input is: 3 8 the output is
Misha Larkins [42]

Answer:

The program to this question can be given as:

Program:

def swap_values(user_val1, user_val2):  #define function

   return (user_val2, user_val1) #return values

if __name__ == '__main__': #define constructor.

   n1 = int(input('Enter first number :')) #input value form user

   n2 = int(input('Enter second number :')) #input value form user

   (n1,n2) = swap_values(n1,n2) #hold function values.

   print(n1) #print values

   print(n2) #print values

Output:

Enter first number :3

Enter second number :8

8

3

Explanation:

The explanation of the above python program can be given as:

  • In the python program we define a function that is "swap_values". This function takes two integer values that is "user_val1 and user_val2" as a parameters and returns variable values that is "user_val2 and user_val1".
  • Then we use a constructor in this we define two variable that is "n1 and n2" these variable are use to take user-input from the user and pass the value into the function.  
  • To hold the value of the function we use n1 and n2 variable and print these variable value.
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Answer

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Explanation

The government can address the concerns of food shortages and water scarcity through embracing new technology interventions to increase farm yields and mitigate the impacts of water shortages. Through crop protection methods, weeds and pest can be controlled. Drip irrigation technology applies water directly to the roots of crops to facilitate high crop production. Other technologies to apply can include organic agriculture and integrated soil fertility management.



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As policy has to be drafted and signed by employee of an organization.

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Explanation:

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