Answer:
The correct option is option 4 from the options indicated below:
Explanation:
The options are as given below
1-SELECT customer# FROM customers
UNION
SELECT customer# FROM orders;
2-SELECT customer# FROM orders
MINUS
SELECT customer# FROM customers;
3-SELECT customer# FROM orders
INTERSECT
SELECT customer# FROM customers;
4-SELECT customer# FROM customers
MINUS
SELECT customer# FROM orders;
Option 1 is not correct as it will provide the list of all the customers whether they have placed order or not.
Option 2 is not correct as it will provide the list of customers who have placed order but are not in the customers table. This will return the empty records.
Option 3 is not correct as it will provide the list of customers who have placed the order.
Option 4 is correct as it will provide the list of customers from the CUSTOMERS table which are not in the Orders table. thus the list of customers who have not placed the order yet.
Answer:
Pros:
- Connect with friends, family in a short period of connecting time
- Faster, easier than paper
- The messages can be stored in the device for longer times, without being damaged, unlike paper files that easily get damages
- Digital communication can be done over large distances through internet and other things.
And many other pros
Cons:
- Software can be easily hacked
- Digital Communication has completelymake people become far to others. They would stop meeting face-to-face but instead of that, video call, chatting is become more popular
- Most of devices have hidden recording mechanisms that can take your information unknowingly and may be used to attack you in the future
And many other cons
Hope this helped :3
Answer:
ooh I have a I phone computer
