Answer: True
Explanation: Security management firm is the organization that provides protection to the system, functions,data, people etc of any particular business organization.They are highly capable of the problem avoidance, management of risk and other such issues.
The monitoring of the security done by the people and devices of the security management firm are more reliable and assured due to the expert skill they persist in the security field. Thus, the given statement is true.
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.
