1. Entity Relationship model is independent of the hardware or software used for implementation. True or False? Mark for Review
2. The purpose of an ERD is to document the proposed system and facilitate discussion and understanding of the requirements captured by the developer. True or False? Mark for Review
3. Which of the following statements are true about ERD's? (Choose Two) Mark for Review
(Choose all correct answers)
A piece of information can be shown multiple times on an ERD.
A piece of information should only be found one place on an ERD. (*)
You should not model derivable data. (*)
All data must be represented on the ERD, including derived summaries and the result of calculations.
4. A well structured ERD will show only some parts of the finished data model. You should never try to model the entire system in one diagram, no matter how small the diagram might be. True or False? Mark for Review