Given the following EER model for an airline business: a. Discuss some examples of semantics that cannot be enforced by the EERmodel;b. Map the model to a relational model representation. Discuss the possibleloss of semantics. c. Clearly indicate the primary–foreign key relationshipsand specify NOT NULL declarations where necessary. AIRPORTNameLocationBelongs toYear ofprod-uctionType(1.1)(0..n)PLANE3 LetterAbbreviation(1..1)Number ofseatsID(1..1)EmploysPILOT(1..3)Is served byIs_assigned to(0..n)Destination(0..n)IDID(0..n)EMPLOYEESTEWARD(ESS)m(1.n)HomeAddressFLIGHTIs_assigned toDeparture(1.n)Date ofBirthIDIs_valid forNameFLIGHT PLANNERCUSTOMER(1..m)IDDestination(1.1)(0..n)TICKETBuysNumberofAirMilesDeparturePrice

The Enhanced Entity Relationship model is primarily an extension based on the ER model. It provides…

Answered: a. Discuss some examples of semantics…

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a. Discuss some examples of semantics that cannot be enforced by the EER model;

Database Systems: Design, Implementation, & Management

12th Edition

ISBN:9781305627482

Author:Carlos Coronel, Steven Morris

Publisher:Carlos Coronel, Steven Morris

Chapter3: The Relational Database Model

Section: Chapter Questions

Problem 25P: Create the ERD. (Hint: Look at the table contents. You will discover that an AIRCRAFT can fly many...

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