Answer:
SELECT Count(order_invoice) as number_of_invoices, Max(order_invoice) as maximum_invoice, Min(order_invoice) as minimum_invoice, Avg(order_invoice) as average_invoice
FROM vendor JOIN invoice ON invoice.id = vendor.id
WHERE order_invoice > 1
ORDER BY number_of_invoices DESC
Explanation:
The select statement of the SQL or structured query language returns twelve rows of four columns from the inner join of the vendor and invoice table in a database where the order_invoice column in the invoice table is greater than one. The result of the query is ordered by the alias column "number_of_invoices" in descending order.
Answer:
def course_grader(student_to_grades, course_prefix):
student_grades = dict()
for key, value in student_to_grades.items():
grade_score = 0
for course,grade in value.items():
if course_prefix == course:
grade_score += grade
student_grades[key] = grade_score / len(value.keys())
return student_grades
Explanation:
The course_grader function is a python program that accepts two arguments, the student dictionary and the course prefix. The function returns a dictionary of the student id as the key and the average grade of the student as the value.
It should be noted that a primary risk to the Workstation Domain is the absence of a firewall and unauthorized access to the workstation.
<h3>
What is a workstation domain?</h3>
The Workstation Domain simply means an individual user's computer where his or her work takes place. It should be noted that computers operating systems have vulnerability which can be susceptible to hackers.
A primary risk to the Workstation Domain is the absence of a firewall and unauthorized access to the workstation.
Learn more about workstation on:
brainly.com/question/26097779
Answer: I a reference to the next node
III a data element
Explanation:
A linked list is simply referred to as a linear data structure, whereby the elements would not be stored at memory locations that are together in the sequence.
In simple words, we can simply say that a linked list is made up of nodes in which, every node has a data element and also a link or reference to the next node that is in the list.
Therefore, based on the explanation above, the correct option will be:
I. a reference to the next node
III a data element
