BIS245 Course Discussions Week 2

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BIS245 Course Discussions Week 2
Data modeling is the process of documenting a complex software system design…

SKU: BIS 245 Applying Design Entity Relationship Modeling  Categories: , Tags: , , ,

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BIS245 Course Discussions Week 2

BIS245 Course Discussions Week 2

Applying Design to Entity Relationship (ER) Modeling

Week 2 All Students Posts – 71 Pages

  • When designing database tables, the difference between a good design and a bad design can be a few seconds in response time and several minutes. You may think that this is not a huge difference, but imagine waiting several minutes on a web page for your results to load. How long would you wait? A slow database can mean the loss of customers. So let’s begin by discussing some of the common elements of tables and how you would approach the table design. What would you do to ensure that your page loads in a few seconds? Discuss the relationship types and how they affect your design.
  • What role does the entity-relationship (ER) diagram play in the design process? Discuss the different types of information represented in the ER diagram and the symbols used to represent them. How would you approach the diagramming process?

Data modeling is taking all of the main points in your data and putting them together to explain what you are trying to show.  I believe that data modeling is really like a book, because you are basically telling some kind of story behind your data.  So in other words data modeling really is creating something that makes it easy for people to understand what you are showing.  If this is done right then others can use your information that was gathered to find what they are looking for.  A good example might need to find out what a customer bought and when they bought it…