Question: Draw the relational diagram for the design you revised in
Draw the relational diagram for the design you revised in problem 27. (After you have had a chance to revise the design, your instructor will show you the results of the design change, using a copy of the revised database named Ch03_AviaCo_2).
Answer to relevant QuestionsCreate the table that would result from applying the SELECT and PROJECT relational operators to the CHARTER table to return only the CHAR_TRIP, CHAR_PILOT, and CHAR_COPILOT attributes for charters flown by either employee ...What two conditions must be met before an entity can be classified as a weak entity? Give an example of a weak entity.What three (often conflicting) database requirements must be addressed in database design?What is a composite entity, and when is it used?United Helpers is a nonprofit organization that provides aid to people after natural disasters. Based on the following brief description of operations, create the appropriate fully labeled Crow’s Foot ERD.• Individuals ...
Post your question