Answer:
The query may still be specified in SQL by using a nested query as follows (not all
implementations may support this type of query):
SELECT DNAME, COUNT (*)
FROM DEPARTMENT, EMPLOYEE
WHERE DNUMBER=DNO AND SEX='M' AND DNO IN ( SELECT DNO
FROM EMPLOYEE
GROUP BY DNO
HAVING AVG (SALARY) > 30000 )
GROUP BY DNAME;
Explanation:
The most appropriate answer is d. marketing. By developing and maintaining good relationships with customers, businesses can benefit by getting 'free' marketing or advertising. Real customers who are satisfied with a particular product or service are better able to convince potential customers. Businesses benefit in this way by improving the visibility of their brand.
Those services are <span>considered to be part of the user company's information system.
The information system obviously provides relevant information about something - given that here services are given which may have an effect on the initiation, execution, processing, or reporting of a user company's transactions, they do belong to the information system of that company.
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