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Weak Entity Modeling in ERDs
Review of the fan trap and chasm trap in entity-relationship diagramming and how to assess whether a potentially redundant connection in an E-R diagram is in fact required or not
Last episode, we treated our Decision Tree as a blackbox. In this episode, we'll build one on a real dataset, add code to visualize it, and practice reading it - so you can see how it works under the hood. And hey -- I may have gone a little fast through some parts. Just let me know, I'll slow down. Also: we'll do a Q&A episode down the road, so if anything is unclear, just ask! Follow https://twitter.com/random_forests for updates on new episodes! Subscribe to the Google Developers: http://goo.gl/mQyv5L - Subscribe to the brand new Firebase Channel: https://goo.gl/9giPHG And here's our playlist: https://goo.gl/KewA03
The ninth tutorial in the database design series. Database design is explored with particular consideration to the concepts of multi-value attributes in contrast to composite attributes and derived attributes are defined and examined. If you like my free YouTube tutorials, check out my Udemy tutorials. Using these links you can get them for just $10 each! Here is a link to my Computer Programming for Beginners course, which teaches the fundamentals of coding to people with little or no prior experience: https://www.udemy.com/computer-programming-for-beginners/?couponCode=PROGRAMMING Also, here is the link to my Python Crash Course: Turtle Graphics where I teach how to use a Python graphics library to develop interactive art and a space shooter video game: https://www.udemy.com/python-crash-course-turtle-graphics/?couponCode=PYTHONGRAPHICS Free preview videos from the courses are available on my YouTube channel and on Udemy, so you can watch part of the course before deciding if it is right for you!
A lesson on how to use the Multi-attribute Model to understand Consumer Behavior
Modeling Multi-Valued Attributes