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diff --git a/usth/ICT2.7/P3L2 A Tale of Analysis and Design Subtitles/9 - Final Considerations - lang_en.srt b/usth/ICT2.7/P3L2 A Tale of Analysis and Design Subtitles/9 - Final Considerations - lang_en.srt deleted file mode 100644 index 0dbfccd..0000000 --- a/usth/ICT2.7/P3L2 A Tale of Analysis and Design Subtitles/9 - Final Considerations - lang_en.srt +++ /dev/null @@ -1,196 +0,0 @@ -1 -00:00:00,140 --> 00:00:03,202 -Okay. So this is what I've done as you see, - -2 -00:00:03,202 --> 00:00:06,130 -it looks a little nicer than it was before. And I didn't - -3 -00:00:06,130 --> 00:00:08,530 -really change that much. I just made a few changes, so - -4 -00:00:08,530 --> 00:00:11,560 -I just wanted to point them out to you, so that you - -5 -00:00:11,560 --> 00:00:13,690 -know what they are. And the main thing, one of the - -6 -00:00:13,690 --> 00:00:18,210 -main things I did is really to introduce these derived attributes. So - -7 -00:00:18,210 --> 00:00:19,860 -these are attributes that are basically - -8 -00:00:19,860 --> 00:00:22,520 -computed. Based on some other attributes. - -9 -00:00:22,520 --> 00:00:26,010 -Okay, they don't have a value themselves, but their value is computed. - -10 -00:00:26,010 --> 00:00:28,900 -And I used two. The first one is age. So - -11 -00:00:28,900 --> 00:00:31,930 -basically we know the age of the patron based on - -12 -00:00:31,930 --> 00:00:34,920 -the birthday, of the patron. So you guys, I don't - -13 -00:00:34,920 --> 00:00:37,150 -know if you have that information currently in the system. - -14 -00:00:37,150 --> 00:00:38,480 ->> No, we'll have to add that to the - -15 -00:00:38,480 --> 00:00:40,280 -form patrons fill out, when they get their card. - -16 -00:00:40,280 --> 00:00:42,255 ->> Is that, that an issue? Can you do it? - -17 -00:00:42,255 --> 00:00:44,130 ->> No yes, we, we can easily do that. - -18 -00:00:44,130 --> 00:00:46,670 ->> Okay, so then, perfect. So we'll do it that way. I think it's - -19 -00:00:46,670 --> 00:00:51,310 -a, in a little cleaner. And similarly, since you told me that the fine - -20 -00:00:51,310 --> 00:00:54,480 -was computed based on the amount of days that an - -21 -00:00:54,480 --> 00:00:58,310 -item was late. The patron was late returning the item, then I - -22 -00:00:58,310 --> 00:01:02,010 -also added this as a derived attribute that is computed based on - -23 -00:01:02,010 --> 00:01:05,140 -the due date and when the item is actually returned. - -24 -00:01:05,140 --> 00:01:05,780 ->> Makes sense. - -25 -00:01:05,780 --> 00:01:08,389 ->> Makes sense? Okay. And the rest - -26 -00:01:08,389 --> 00:01:10,590 -is kind of really minor things. So the, the only one I - -27 -00:01:10,590 --> 00:01:14,340 -want to point out is I didn't, you know, discuss that with - -28 -00:01:14,340 --> 00:01:17,260 -you before, but I added this, which is called cardinality - -29 -00:01:17,260 --> 00:01:20,700 -for some of these relationships. And what they say is basically - -30 -00:01:20,700 --> 00:01:25,360 -is how many elements are involved in the relationship. - -31 -00:01:25,360 --> 00:01:26,580 ->> So, you mean the stars? - -32 -00:01:26,580 --> 00:01:27,960 ->> Yeah, like the stars and the one... - -33 -00:01:27,960 --> 00:01:28,290 ->> Okay. - -34 -00:01:28,290 --> 00:01:31,380 ->> Here for example, this is telling you that for each item there - -35 -00:01:31,380 --> 00:01:35,490 -is only one title. And that for each title, there are multiple items. - -36 -00:01:35,490 --> 00:01:36,490 ->> So, star means many. - -37 -00:01:36,490 --> 00:01:37,716 ->> Stars mean many, yeah. - -38 -00:01:37,716 --> 00:01:39,045 ->> Okay, go you. - -39 -00:01:39,045 --> 00:01:42,321 ->> Sorry that's kind of computer science lingo - we use the star - -40 -00:01:42,321 --> 00:01:45,500 -for that kind of stuff. And, similarly, for the patron, it's - -41 -00:01:45,500 --> 00:01:48,510 -telling me that, you know, each patron can have multiple, can - -42 -00:01:48,510 --> 00:01:52,550 -request multiple titles, and that the same title can be requested - -43 -00:01:52,550 --> 00:01:55,650 -by multiple patrons, which I think is the way the system works. - -44 -00:01:55,650 --> 00:01:59,080 ->> Right. So except for these minor changes, - -45 -00:01:59,080 --> 00:02:01,850 -we already had a pretty good model in our hands, so - -46 -00:02:01,850 --> 00:02:04,620 -I think is a, we can finalize this and then just - -47 -00:02:04,620 --> 00:02:07,350 -move to the low level design and then implementation, and be - -48 -00:02:07,350 --> 00:02:07,970 -done with the system. - -49 -00:02:07,970 --> 00:02:08,979 ->> Sounds good. - |