Answer:
SELECT inventory_id, film_id, title, store_id, address_id
FROM Inventory.Inventory
JOIN Business.store ON Inventory.store_id = store.store_id
JOIN Business.rental ON rental.film_id = Inventory.film_id
JOIN film_text ON Inventory.film_id = film_text.film_id
WHERE COUNT(rental_id) = 0;
Explanation:
The JOIN clause is also used to query tables from two databases. The Inventory and the Business database are joined in the inventory and store table respectively. The Query also joins the inventory table and the film_text table to get the title or name of the film rented where the rental_id count is equal to zero.
Answer:
Elections
Explanation:
This is because the applications helps citizens to carry out legal elections without stress of moving long distances and it helps keeps votes secret coz of personal view of the data entry
Virtual memory may provide a reasonably large storage capacity in an affordable cost.
<u>Virtual Memory:</u> the operating systems of all modern computers have virtual memory where a disk is used to transfer the data temporarily from the RAM when physical memory of the computer falls short. Though it is cheap but it does not allow computers to have more memory and frequent swapping even makes the PC slow.
<u>Tiered memory:</u> has the fastest data storage and even has a good storage capacity but is pretty expensive.
<u>Volatile memory:</u> volatile memories have good performance in terms of speed and storage but they still are a little expensive in comparison to non-volatile memory.
<u>Non-volatile memory:</u> they do not provide with large storage capacities.
Answer:
Sites like Face.book are full of valuable data for people who use social engineering to steal your identity on social media. You should therefore avoid sharing information that's used to verify your identity,
Explanation:
It's more expensive, it's more difficult to configure and maintain and it can be more difficult to troubleshoot
