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sashaice [31]
3 years ago
12

Discuss the characteristics of relations that make them different from ordinary tables and files

Computers and Technology
1 answer:
zmey [24]3 years ago
5 0

<span>Ordering of tuples in a Relation : </span>The tuples are not considered to be in order, even though they appear to be in the tabular form. The Ordering of attributes in a relation schema R and of values within each tuples - We consider the attributes in R(A1, A2, .., An) and the values in t=<v1, v2, .., vn> to be in order. Values in a tuple :  All values are considered to be indivisible (atomic). A special null value is used to represent values that are unknown or not applicable to certain tuples.

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State three reasons why users attach speakers to their computer​
____ [38]

Answer:

For listening sake

To listen to information from the computer

They receive audio input from the computer's sound card and produce audio output in the form of sound waves.

8 0
3 years ago
Two numbers are given (numbers are entered from the keyboard). If both numbers are positive, then output their sum, if both numb
AleksAgata [21]

Answer:

The program in Python is as follows:

num1 = int(input())

num2 = int(input())

if num1 >=0 and num2 >= 0:

   print(num1+num2)

elif num1 <0 and num2 < 0:

   print(num1*num2)

else:

   if num1>=0:

       print(num1**2)

   else:

       print(num2**2)

Explanation:

This gets input for both numbers

num1 = int(input())

num2 = int(input())

If both are positive, the sum is calculated and printed

<em>if num1 >=0 and num2 >= 0:</em>

<em>    print(num1+num2)</em>

If both are negative, the products is calculated and printed

<em>elif num1 <0 and num2 < 0:</em>

<em>    print(num1*num2)</em>

If only one of them is positive

else:

Calculate and print the square of num1 if positive

<em>    if num1>=0:</em>

<em>        print(num1**2)</em>

Calculate and print the square of num2 if positive

<em>    else:</em>

<em>        print(num2**2)</em>

3 0
3 years ago
23+ Composition refers to
Law Incorporation [45]

Answer:

c. The placement and relationship of  elements within a picture

Explanation:

Required

What composition means?

Literally, composition means the way the elements of a picture are presented. The elements in this case constitute all lines, shapes, dots, pattern and many more.

You will notice that some of these elements will be placed over one another, some side by side, some far from one another.

So, composition means the way these elements are displayed.

<em>Hence, option (c) is correct.</em>

3 0
3 years ago
Most colleges require blank years of foriegn language for admission
Sladkaya [172]

They require about 4 years of foreign language if you want to learn more afterwards then it is another 2 years or 3.

3 0
3 years ago
What is precipitation ????
kenny6666 [7]

Answer:

Precipitation has 2 meanings

In chemistry it is the action or process of precipitating a substance from a solution

But in general it is the common term for rain, snow, sleet or hail that falls to the ground

Explanation:

Just look the definition up

3 0
2 years ago
Read 2 more answers
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