Salutations!
<span>Which is an example of fixed expense?
Rent is an example of fixed expense, It doesn't matter whether you sell a widget or produce thousand of them, you must still pay the rent in any </span><span>circumstances.
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Hope I helped.
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.
A formula key components are:
- Functions
- References
- Operators
- Constants.
<h3>What is a formula?</h3>
This is known to be a kind of mathematical relationship or rule that is said to be expressed in form of symbols.
Therefore, A formula key components are:
- Functions
- References
- Operators
- Constants.
Learn more about formula from
brainly.com/question/2005046
#SPJ11
