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Svet_ta [14]
3 years ago
11

Why would "ExpirationDate” be a poor choice as a primary key?

Computers and Technology
1 answer:
denis23 [38]3 years ago
4 0
<span>There could be more than one item with the same expiration date, and primary keys must be unique.</span>
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Window is a very popular operating system becouse of its _ environment .​
Inga [223]
Window is a vary popular operating system because of its runtime and compatible environment .
hope it help
4 0
3 years ago
Read 2 more answers
#Write a function called is_composite. is_composite should #take as input one integer. It should return True if the #integer is
malfutka [58]

Answer:

// A optimized school method based C++ program to check  

// if a number is composite.  

#include <bits/stdc++.h>  

using namespace std;  

bool isComposite(int n)  

{  

// Corner cases  

if (n <= 1) return false;  

if (n <= 3) return false;  

// This is checked so that we can skip  

// middle five numbers in below loop  

if (n%2 == 0 || n%3 == 0) return true;  

for (int i=5; i*i<=n; i=i+6)  

 if (n%i == 0 || n%(i+2) == 0)  

 return true;  

return false;  

}  

// Driver Program to test above function  

int main()  

{  

isComposite(11)? cout << " true\n": cout << " false\n";  

isComposite(15)? cout << " true\n": cout << " false\n";  

return 0;  

}

Explanation:

3 0
3 years ago
What would the following program print to the screen when run?
Lady bird [3.3K]

Answer:

The output will be:

B

o

n

d

0

0

7

Explanation:

Given code is of Python language

Let us look at the code line by line

The first line is:

my_list = [7, 0, 0, "d", "n", "o", "B"]

This line will create a list with the given elements.

my_list.reverse()

This line will reverse the sequence of the elements of the list

for thing in my_list:

print (thing)

These lines will simply print the reversed elements of the list on screen.

The output will be:

B

o

n

d

0

0

7

8 0
3 years ago
_______is a term which describes how the operating system will interrupt the execution of an application when an application of
a_sh-v [17]

Answer:

scheduling

Explanation:

Scheduling- it is referred to as assigning a task to complete the goal or work on time. he works can include data flow, processing of data, etc.

There are two main types of scheduling

1) Preemptive process

2) Non- preemptive process

Preemptive process -  in this process, priority is given to important tasks rather than less important tasks. the current task can be held for an important task

Non-preemptive process -  It is referred to that process when the predefined schedule follows. In this  process, next task executed only when current task finish

6 0
3 years ago
What is output?
postnew [5]

Answer:The French and Dutch settlements differed from the Spanish colonies in that they were created mainly to trade and develop industries, while the Spanish were primarily concerned with gold and silver excavation, and then later with sugar exportation.

Explanation:The French and Dutch settlements differed from the Spanish colonies in that they were created mainly to trade and develop industries, while the Spanish were primarily concerned with gold and silver excavation, and then later with sugar exportation.

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