2. An Online Movie Rental Company allows members to play or watch movies. Follow
ID: 3761974 • Letter: 2
Question
2. An Online Movie Rental Company allows members to play or watch movies. Following are the use cases they have defined. • Register new customer • Member Sign in • Browse for Movies o Search by genre o Search by actor o Search by director o Search by movie • Watch selected movie • Add movies to the queue • Ship DVD • Check for return of DVD • Send next movie in the queue 1. Identify all the actors in the above scenario (10 points) 2. Categorize each actor in to one of the 4 types: Primary Business, Primary System, External Server and External Receiver (10 points) 3. Draw a use case diagram with actors and use cases using extends, includes and depends on relationships. (30 points)
Explanation / Answer
RENTING A MOVIE used to be simple. You could grab any title from your local Blockbuster or Hollywood Video and you knew what you were getting: same image and audio quality, same bloopers reel.
Things are different now. Is the "HD" version of a movie that you rent for $4 from Amazon Instant Video the same as the one you get from iTunes? Short answer: Not quite. And depending on whether you're watching on a tablet, computer or TV, the video quality can vary. The larger and sharper the screen, the more noticeable the differences will be.
The rental process has also become a bit more complicated. Now, instead of choosing between DVD and VHS, you select between Standard Definition (SD) or High Definition (HD) for online rentals. But what does it all mean?
On the popular streaming services, SD is the equivalent of what you get from a DVD—a resolution known as 480p. Straightforward enough. The HD versions, however, can differ across the sites. HD movies from Redbox Instant by Verizon, for example, boasts a better-than-DVD resolution of 720p. But, often for the same price, Amazon Instant Video, Google Play, iTunes, Sony Entertainment Network's Video Unlimited, Vudu and Xbox Video deliver high-def movies in an even more detailed 1080p resolution to compatible devices. If you're watching on a large TV—or sitting close to a smaller screen—you'll definitely notice the difference.
If you splurge the extra buck or two on the HD version of a video, be sure your equipment and Internet connection can take advantage of the better resolution that you've paid for. You'll need a high-def TV (or an Ultra HD TV) and a way to connect your system to the Internet. Many TVs have this feature built in; you can also use an Internet-connected Blu-ray player, gaming console or set-top box, like the Apple TV or Roku.
If you have: a high-def TV larger than 50 inches
Rent from: Amazon Instant Video, Google Play, iTunes, Sony's Video Unlimited, Vudu or Xbox Video. These services deliver their high-def movies to compatible devices using a format that looks almost as good as Blu-ray. (Redbox offers a slightly lower-quality format for their HD titles.) On TVs that are around 50 inches or smaller, the difference may not be perceptible unless you're sitting very close to the screen.
Rent from: iTunes, which downloads rented movies rather than streaming them, no matter what device you're watching on. (Other services allow offline viewing, but only with certain devices.) Downloading requires that you wait a bit for your movie to start but prevents the intermittent pauses and drops in quality that can afflict streaming movies when your Internet connection slows. This is especially important if you're looking to get the most out of an HD movie, since streaming services will automatically reduce the video quality when your Internet connection can't handle the bandwidth demands of HD.
If you: want the absolute best video and audio quality
Rent a:physical Blu-ray disc. Loading a shiny disc isn't very 2014, but Blu-ray still offers the best video and audio. Even though various sites may offer the same 1080p-resolution video as that of a Blu-ray disc, the video and audio delivered over the Internet is compressed, which results in pixelation, especially in dark areas of the image, and a soundtrack that isn't as lush and immersive.
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