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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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Answer: edit out anything you dont need

<!DOCTYPE html>  

<html lang = "en">  

<head>  

<title> JavaScript Calculator </title>  

 

<style>  

h1 {  

   text-align: center;  

   padding: 23px;  

   background-color: skyblue;  

   color: white;  

   }  

 

#clear{  

width: 270px;  

border: 3px solid gray;  

   border-radius: 3px;  

   padding: 20px;  

   background-color: red;  

}  

 

.formstyle  

{  

width: 300px;  

height: 530px;  

margin: auto;  

border: 3px solid skyblue;  

border-radius: 5px;  

padding: 20px;  

}  

 

 

 

input  

{  

width: 20px;  

background-color: green;  

color: white;  

border: 3px solid gray;  

   border-radius: 5px;  

   padding: 26px;  

   margin: 5px;  

   font-size: 15px;  

}  

 

 

#calc{  

width: 250px;  

border: 5px solid black;  

   border-radius: 3px;  

   padding: 20px;  

   margin: auto;  

}  

 

</style>  

 

</head>  

<body>  

<h1> Calculator Program in JavaScript </h1>  

<div class= "formstyle">  

<form name = "form1">  

     

   <!-- This input box shows the button pressed by the user in calculator. -->  

 <input id = "calc" type ="text" name = "answer"> <br> <br>  

 <!-- Display the calculator button on the screen. -->  

 <!-- onclick() function display the number prsses by the user. -->  

 <input type = "button" value = "1" onclick = "form1.answer.value += '1' ">  

 <input type = "button" value = "2" onclick = "form1.answer.value += '2' ">  

 <input type = "button" value = "3" onclick = "form1.answer.value += '3' ">  

  <input type = "button" value = "+" onclick = "form1.answer.value += '+' ">  

 <br> <br>  

   

 <input type = "button" value = "4" onclick = "form1.answer.value += '4' ">  

 <input type = "button" value = "5" onclick = "form1.answer.value += '5' ">  

 <input type = "button" value = "6" onclick = "form1.answer.value += '6' ">  

 <input type = "button" value = "-" onclick = "form1.answer.value += '-' ">  

 <br> <br>  

   

 <input type = "button" value = "7" onclick = "form1.answer.value += '7' ">  

 <input type = "button" value = "8" onclick = "form1.answer.value += '8' ">  

 <input type = "button" value = "9" onclick = "form1.answer.value += '9' ">  

 <input type = "button" value = "*" onclick = "form1.answer.value += '*' ">  

 <br> <br>  

   

   

 <input type = "button" value = "/" onclick = "form1.answer.value += '/' ">  

 <input type = "button" value = "0" onclick = "form1.answer.value += '0' ">  

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   <!-- When we click on the '=' button, the onclick() shows the sum results on the calculator screen. -->  

 <input type = "button" value = "=" onclick = "form1.answer.value = eval(form1.answer.value) ">  

 <br>  

 <!-- Display the Cancel button and erase all data entered by the user. -->  

 <input type = "button" value = "Clear All" onclick = "form1.answer.value = ' ' " id= "clear" >  

 <br>  

   

</form>  

</div>  

</body>  

</html>  

Explanation:

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y = float_(input())

z = float_(input())

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res2 = x**(y**z)

res3 = abs(x-y)

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print('{:.2f} {:.2f} {:.2f} {:.2f}'.format(res1,res2,res3,res4))

Output is :

5.0

1.5

3.2

172.47 361.66 3.50 13.13

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Up to 24 bits can be used to identify unique <span>networks.</span>
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