With your group, draw a context-level data flow diagram of your school’s or university’s registration system. Label each entity and process. Discuss why there appear to be different ways to draw the diagram. Reach consensus as a group about the best way to draw the diagram and defend your choice in a paragraph. Now, working with your group’s members, follow the appropriate steps for developing an E-R diagram and create one for your school or university registration system. Make sure your group indicates whether the relationship you depict is one-to-one, one-to-many, many-to-one, or many-to-many.
What will be an ideal response?
The context diagram should have external entities of Student, Registration, an entity that collects the student fee, and so on. The entity-relationship diagram should include Student, Class, and perhaps Course and Textbook entities.
There are many different ways to draw the diagram since the data flow names may vary and external entities may be placed anywhere around the diagram. External entities may also appear on both sides of the central process.
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