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Virtual Tech Self-Study Message Board › Lesson 04, MySQL Marinate, Season 2

Lesson 04, MySQL Marinate, Season 2

Sheeri Kritzer C.
sheeri
Group Organizer
Boston, MA
Post #: 181
Notes for Chapter 4:
The official errata for chapter 4, pages 109 - 133, is at http://tahaghoghi.com...­

On p. 131, it says that reverse engineering an ER model from an existing database in MySQL Workbench is in beta testing phase. This function has been stable for a long time, so it's safe to use.

In the chapter it talks about making sure your data doesn't repeat itself, and how to design so that there aren't consistency problems. If you want to learn more about normalization, feel free to listen to the OurSQL Podcast (www.oursql.com), episode 7 about normalization and episode 64, about different normal forms.

As you are reading this chapter, if you are wondering how a model relates to reality, know that for the most part, entities become tables and attributes become fields in a table. Relationships may or may not become tables, though for many to many relationships they usually do.

For the homework, DO NOT USE MySQL Workbench to make Entity/Relationship diagrams. It is not a true E/R diagram and you will not be able to show everything you need to (e.g. the symbols for a weak entity do not exist in MySQL Workbench).

This space is reserved for updates and questions about Chapter 4 of the Learning MySQL book being used in the MySQL Marinate virtual self-study course. If you want, you can go to the Master Discussion List for MySQL Marinate Season 2.
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