This course describes a design methodology for creating a database capable of producing useful information in a consistent manner.
Current relational database
software has brought point-and-click ease to the task of creating dabases.
However, unless your database is properly designed,
it will be characterized by data problems such as
- missing data,
- incorrect data and
- mismatched data
that will make it almost useless, no matter how user-friendly the software is.
After completing the first course in this series, you will be able to:
Explain relational database design concepts and terminology
Explain the difference between conceptual and physical models
Develop a conceptual design
Analyze user information requirements
Describe the entity/relationship modeling approach
Model relationships and identify attributes
Use primary and foreign keys
In this course, I will discuss relational database design
with the aid of two kinds of graphical displays,
- the SlideShow and
- the MouseOver.
You will complete a course project that involves creating a database design diagram
appropriate to the needs of Stories on CD, Inc.
This is a fictional company that sells books on CD via mail order.
You will complete the project incrementally via a series of exercises that provide opportunities to apply what you have learned to a real-world situation.
While the company is small and its needs are relatively simple, the principles you apply to analyzing its requirements and designing a database to
meet them are the same as those that database designers apply to much larger projects involving multi-national corporations.