True | <span>Good digital citizenship includes keeping in mind who has access to the internet and who does not, as there are situations in which people or business assume there is always an internet connection but it is not always like that. Forr example, in a contact card it could be useful to include a phone number, as someone may not having access to mail.
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Google Glasses® | <span>Google Glasses® was a technology developed by Google, which included the portability of the Google technology on a glass lens. However, the project failed, and the glasses have not made the huge breakout expected. There is a new version in elaboration now that seems to be more promising. </span>
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.
The LinkedIn Answers is a component of LinkedIn that allows
you to get fast and accurate solutions to your questions. It provides a forum
through which you can demonstrate your expertise by offering info to your
network. You should use LinkedIn answers to ask and answer questions.
Essentially, you should use it to provide examples to your work product,
decision making skills, and on an interactive basis.
System software is a type of computer program that is designed to run a computer’s hardware and application programs.
Generalized software refers to software designed to read, process and write data with the help of functions performing specific audit routines and with self-made macros.
