Answer:
Hi Riahroo! This is a good question on the concept of relational databases.
We can normalize the relations as follows:
Flight
(flightnumber (unique), flighttime, airline_id, departure_city, arrival_city, passenger_id, pilot_id, airplane_id)
has_one_and_belongs_to :airline
has_many :passengers
has_one :pilot
Itinerary(passenger_id, flight_id)
Belongs_to
Passenger_details
(passengername (unique), gender, date_of_birth)
has_many :flights
Pilot
(pilotname (unique), gender, date_of_birth)
has_many :flights
airline(airlinename)
airplane(planeID, type, seats))
Explanation:
To normalize a relation, we have to remove any redundancies from the relationships between database objects/tables and simplify the structure. This also means simplifying many-to-many relationships. In this question, we see there is a many-to-many relationship between flights and passengers. To resolve this we can introduce a join table which simplifies this relationship to a one-to-many between the objects.
Answer:
Models represent the system or problem at a detailed implementation level.
Models help communicate a design.
Models help you understand a complex situation by including all of the details.
hope this is correct :)
NET framework.
Hope this is what you needed.
Answer:
The correct answer to the following question will be "Cloud computing".
Explanation:
A series of technologies too abstract the specifics of how users are supplied with the software, data, network, and other computing services, called Cloud computing. On-demand, the accessibility of computer resources, database space, and computational complexity, with little or no particular active user administrators.
This term is commonly used to define network infrastructure which is available to several users over the internet.
There are different types of cloud computing. These are as follows:
- Infrastructure-as-a-Service (IaaS).
- Software-as-a-Service (SaaS).
- Platform-as-a-Service (PaaS).
Therefore, Cloud computing is the right answer.
