<p> Oracle Internet Academy Data Modeling & Relational Database Design Lesson 1: Introduction to Entities, Attributes, & Relationships Contributed by Mike O’Donnell – Adjunct Instructor 2002-2004</p><p>1. List six reasons a conceptual model should be created.</p><p>2. Of your list from the question above, which reason is the most important? Why?</p><p>3. Using your own words, define Entity Relationship Modeling.</p><p>4. List four goals of Entity Relationship Modeling.</p><p>5. Is Entity Relationship Modeling tied to any specific type of database? If so, which type? If not, why?</p><p>6. Give three examples of entities a school would use in a database.</p><p>7. Of the three examples of entities from the question above, give two example instances for each.</p><p>8. How is Set Theory related to Entities?</p><p>9. Define Attribute.</p><p>10. Can an attribute have more than one value at any one time? Why is this important?</p><p>11. Give an example of a volatile attribute.</p><p>12. Define Relationship.</p><p>13. List a relationship between any of the entities you wrote for Question 6, above.</p><p>14. How is the term Entity Relationship Model (ERM) logically connected to Entity Relationship Diagram(ERD)?</p><p>15. List three rules for graphically representing an Entity in an ERD.</p><p>16. Where do Entities lead in the design of a relational database?</p><p>17. How do you differentiate between attributes that are mandatory and attributes that are optional?</p><p>18. Where do Attributes lead in the design of a relational database?</p><p>19. How are Relationships graphically represented in an ERD?</p><p>20. What does the shape of the end of the relationship line represent? How?</p><p>21. How do you differentiate between Mandatory and Optional Relationships?</p><p>22. Where do Relationships lead in the design of a relational database?</p><p>D:\Docs\2018-04-08\09b162ba760fcc0c628125fd8e039a4f.doc 23. How are business functions connected to the data model?</p><p>D:\Docs\2018-04-08\09b162ba760fcc0c628125fd8e039a4f.doc</p>