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Enhanced Entity-Relationship Model Part 2: Generalization vs. Specialization and EER Constraints 

Brian Finnegan
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Further detail on the relationship between top-down (specialization) and bottom-up (generalization) EER modeling and our expectations regarding EER model constraints

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29 сен 2024

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Комментарии : 32   
@alexr6479
@alexr6479 5 лет назад
Great video, helped me more than my professor!
@boburirgashev4762
@boburirgashev4762 4 года назад
still great explanation, thank you for these tutorial sets
@workforceinternational1047
@workforceinternational1047 10 лет назад
You sir are a gentleman and a scholar.
@saudidreesi
@saudidreesi 8 лет назад
Thanks Brian, excellent job !
@thetruereality2
@thetruereality2 10 лет назад
Thank you sir, this helped a lot.
@mahrou616
@mahrou616 Год назад
Thank you, Sir
@ipatan
@ipatan 9 лет назад
Thank you so much, great video I wish my teacher could learn from you !
@bcp2004
@bcp2004 6 лет назад
Id love to use your videos to study but could you pleasssseeee put them all in a playlist that starts with the first introduction video proceeding to the last. Its all over the shop and I dont know where to start
@flipsmash
@flipsmash 11 лет назад
Not quite. A second line from people to the circle would mean that each person in the domain MUST participate in a specialization category. In other words, each person is required to be either an employee or a student or an alum. Whatever the participation constraint, you should elicit and model whatever specialties are useful. If you needed to add additional categories beyond student, employee and alum, you should do so, no matter what the constraints.
@rachelwang7818
@rachelwang7818 4 года назад
This is very helpful. Thank you!
@le0nz
@le0nz 8 лет назад
Great videos, very useful. Thanks!!
@keethsamarakoon2607
@keethsamarakoon2607 2 года назад
thanks for the lecture ...
@WishIxwasxAxPlatypus
@WishIxwasxAxPlatypus 6 лет назад
thanks for your emphasis on each explanation. like in the disjoint and overlapping examples and contrasts. you explained the design choices fro choosing disjoint and overlap more than I could hope for.
@fulanitooriginal
@fulanitooriginal 4 года назад
Unique MC attribute: handle bars, lol
@TheHeadlets
@TheHeadlets 6 лет назад
Thanks so much for the informative video! Really helped me make notes for an upcoming assignment. Appreciate it.
@MuhammadRafliYulistiawan
@MuhammadRafliYulistiawan 3 года назад
Thank you, Sir
@RasmusNrgaard
@RasmusNrgaard 10 лет назад
Great video (videos)...but where is the translation video for this type of diagram?
@ryanfrancisco2721
@ryanfrancisco2721 4 года назад
Still usable! Thank you so much!
@chiragvaland2406
@chiragvaland2406 9 лет назад
very good and interesting video. it will help me a lot in my future..!
@rotteliket
@rotteliket 11 лет назад
So a second line from People down to the cirkle would indicate that there could be more categories than those three? (Nice video!)
@ManukaMadurangaa
@ManukaMadurangaa 8 лет назад
Is there any way i can contact you? i have some questions to ask?
@chantellefernandez9747
@chantellefernandez9747 3 года назад
Saved my life thank you
@IraqAllFor
@IraqAllFor 11 лет назад
This is the best tutorial on uTube, thanks a lot, directly to the point thanks. I am waiting for the mapping to tables lesson
@mim2011
@mim2011 6 лет назад
RAM م
@NeeleshRajpurohit
@NeeleshRajpurohit 7 лет назад
superb explaination sir
@binbashburns
@binbashburns 6 лет назад
Thank you so much.
@boniedwin
@boniedwin 7 лет назад
thank you so much
@atomic7680
@atomic7680 8 лет назад
Great Videos
@j.a.h.5150
@j.a.h.5150 8 лет назад
very good!
@RalphNgOfficial
@RalphNgOfficial 8 лет назад
What are the differences between ER and EER?
@flipsmash
@flipsmash 8 лет назад
+Ralph Ng EER includes the generalization/specialization relationship, thus extending the original ER model, which did not include it.
@dmstwnted007
@dmstwnted007 11 лет назад
sud be mor to the point but gr8
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