COSC 471/571  hw0307

Turning Chen ER digram into UML diagram
Individual work -- no group work.

Distributed: 3/7/2019       Due: 3/12/2019

Consider the ER diagram for Airline Reservation and Flight attached.

Redraw as UML diagram in two pieces. Include attributes and primary key information.
Include cardinalities and participations.

(1) without weak entities.  That is, include the following entities:
  Airport
  Airplane Type
  Airplane
  Flight Leg
  LegInstance
  
  and include the following relationships:
  Can Land
  Type 
  Departure Airport
  Arrival Airport
  Instance Of
  Departs
  Arrives
  
(2) Weak entities and identifying relationships and entities:
  Entities:
  Flight Leg
  Flight
  Fare
  Seat
  Leg Instance
  Airplane
  
  Relationships:
  Legs
  Assigned (Flight <--> Fare)
  Reservation
  Assigned (Airplane <--> LegInstance)
  
Note, I strongly advise you to read the section in the text dealing with weak
entities.
NOTE: Your job in this assignment is to MODEL THE CONCEPTUAL INFORMATION.  

Turn in:
-- Two UML diagrams