AirportLogistics

4.1 Analysis Result

The monolith has been split into 7 microservices. The global data schema consists of 35 relationships. Each of the 7 microservices owns its own local data schema. 24 of the 35 relationships could be kept within the microservice architecture. This is a percentage value of approximately 69. Both entities of these kept relationships can still be retrieved by a local transaction running in only one microservice. The complexity stays the same as it has been in the monolithic architecture. The local transactions still can profit from the ACID feature that most of the standard relational databases support. 31 percent of the relationships have been destroyed by the data schema split. For those broken relationships, there have to be introduced distributed transactions that span over more than one microservice. Please take a look into the subchapters 3.x.x of this cookbook. For each of the 28 entities, there can be found a description how to create a global transaction that span over more than microservice.

Microservice architecture for schema

Microservices

3.1 AirplaneService	3.2 AirportService	3.3 CargoService	3.4 CountryService	3.5 EmployeeService	3.6 LuggageService
3.7 PassengerBookingService

4.2 System decomposition matrix

0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Airline	AirplaneService
1	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Airplane	AirplaneService
0	1	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	AirplaneEquipment	AirplaneService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	AirplaneProducer	AirplaneService
0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	AirplaneType	AirplaneService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	EquipmentType	AirplaneService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	Airport	AirportService
0	1	0	0	0	0	0	1	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Flight	AirportService
0	0	0	0	0	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	FlightRoute	AirportService
0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Gate	AirportService
0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Terminal	AirportService
0	0	0	0	0	0	1	0	0	0	0	1	1	0	0	0	0	0	0	0	0	0	0	0	CargoBooking	EmployeeService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Customer	EmployeeService
1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Employee	EmployeeService
0	0	0	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	0	0	0	0	0	EmployeeTask	EmployeeService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Task	EmployeeService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	Passenger	PassengerBookingService
0	0	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	0	0	0	0	0	0	0	PassengerBooking	PassengerBookingService
0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	Seat	PassengerBookingService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	SeatCategory	PassengerBookingService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	1	0	0	0	0	Luggage	LuggageService
0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	1	0	0	0	0	0	LuggageCheck	LuggageService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	LuggageType	LuggageService
0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	1	0	0	Cargo	CargoService
0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	1	0	0	0	CargoCheck	CargoService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	CargoType	CargoService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	City	CountryService
0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	Country	CountryService

References

No	Property Name	Entity	References Entity	Microservices
1	Airplane . Airline	Airplane	Airline	AirplaneService
2	Airplane . AirplaneType	Airplane	AirplaneType	AirplaneService
3	AirplaneEquipment . Airplane	AirplaneEquipment	Airplane	AirplaneService
4	AirplaneEquipment . EquipmentType	AirplaneEquipment	EquipmentType	AirplaneService
5	AirplaneType . AirplaneProducer	AirplaneType	AirplaneProducer	AirplaneService
6	Airport . City	Airport	City	AirportService CountryService
7	Flight . Airplane	Flight	Airplane	AirportService AirplaneService
8	Flight . FlightRoute	Flight	FlightRoute	AirportService
9	Flight . DepartureGate	Flight	Gate	AirportService
10	Flight . ArrivalGate	Flight	Gate	AirportService
11	FlightRoute . Destination	FlightRoute	Airport	AirportService
12	FlightRoute . Source	FlightRoute	Airport	AirportService
13	Gate . Terminal	Gate	Terminal	AirportService
14	Terminal . Airport	Terminal	Airport	AirportService
15	CargoBooking . Flight	CargoBooking	Flight	EmployeeService AirportService
16	CargoBooking . Customer	CargoBooking	Customer	EmployeeService
17	CargoBooking . Employee	CargoBooking	Employee	EmployeeService
18	Employee . Airline	Employee	Airline	EmployeeService AirplaneService
19	EmployeeTask . Employee	EmployeeTask	Employee	EmployeeService
20	EmployeeTask . Task	EmployeeTask	Task	EmployeeService
21	Passenger . Nationality	Passenger	Country	PassengerBookingService CountryService
22	PassengerBooking . Flight	PassengerBooking	Flight	PassengerBookingService AirportService
23	PassengerBooking . Passenger	PassengerBooking	Passenger	PassengerBookingService
24	PassengerBooking . Seat	PassengerBooking	Seat	PassengerBookingService
25	Seat . Airplane	Seat	Airplane	PassengerBookingService AirplaneService
26	Seat . SeatCategory	Seat	SeatCategory	PassengerBookingService
27	Luggage . FlightBooking	Luggage	PassengerBooking	LuggageService PassengerBookingService
28	Luggage . LuggageType	Luggage	LuggageType	LuggageService
29	LuggageCheck . Checker	LuggageCheck	Employee	LuggageService EmployeeService
30	LuggageCheck . Luggage	LuggageCheck	Luggage	LuggageService
31	Cargo . CargoBooking	Cargo	CargoBooking	CargoService EmployeeService
32	Cargo . CargoType	Cargo	CargoType	CargoService
33	CargoCheck . Checker	CargoCheck	Employee	CargoService EmployeeService
34	CargoCheck . Cargo	CargoCheck	Cargo	CargoService
35	City . Country	City	Country	CountryService

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