Consider the ER diagram for the AIRLINE database shown in Figure 3.21. Build this design using a
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Consider the ER diagram for the AIRLINE database shown in Figure 3.21. Build this design using a data modeling tool such as ERwin or Rational Rose.
Figure 3.21
Transcribed Image Text:
Airport_code City State Name DEPARTURE_ 1 AIRPORT N Leg no AIRPORT Scheduled_dep_time Scheduled_arr_time FLIGHT_LEG 1 ARRIVAL_ N CAN_ LAND AIRPORT Instances LEGS Number Type_name Max_seats INSTANCE_OF Company Airline FLIGHT N. Weekdays AIRPLANE_ Arr_time 1 TYPE DEPARTS> 1 ARRIVES Restrictions FARES 1 Dep_time N Amount TYPE Code FARE Airplane id Total_no_of_seats No_of_avail_seats N ASSIGNED LEG INSTANCE Date AIRPLANE Customer_name Cphone Seat no RESERVATION Notes: A LEG (segment) is a nonstop portion of a flight. A LEG_INSTANCE is a particular occurrence of a LEG on a particular date. SEAT
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Related Book For
Fundamentals Of Database Systems
ISBN: 9780133970777
7th Edition
Authors: Ramez Elmasri, Shamkant Navathe
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