Posted: January 18th, 2017

Identify one superclass and at least 3 subclasses for this specialization hierarchy. What attributes would differ among the subclasses?

Propose a business scenario that may take advantage of a specialization hierarchy. Do not repeat an example from the textbook or one that has been posted by another student.

• Identify one superclass and at least 3 subclasses for this specialization hierarchy. What attributes would differ among the subclasses?

Then, in separate posts, follow up to one or more of your fellow students in substantive posts of up to 200 words that further the discussion. For example, you may support or politely challenge a post with your own insights or experience, make a suggestion, or ask probing follow-up questions.

Support your ideas with explanations and/or sources, as appropriate.

Week 3 Discussion 2

Entity Relationship Modeling Features

Please respond to the following in not more than 200 words:

• Identify one specific entity relationship modeling feature that you find either especially useful or mostly useless. Do not repeat an example that has been posted by another student.
• If you identified a useful feature, how might you apply it?
• If you identified a useless feature, speculate on why SQL includes it.

Then, in separate posts, follow up to one or more of your fellow students in substantive posts of up to 150 words that further the discussion. For example, you may support or politely challenge a post with your own insights or experience, make a suggestion, or ask probing follow-up questions.

Support your ideas with explanations and/or sources, as appropriate.