Answer:
The correct answer is:
Option D: Put Quotation marks around the string
Explanation:
There are various data types that are used to store data in programming i.e. numeric, alphabetic, alphanumeric etc.
Given that Jenn wants to store the value in variable. The names of cars are usually rods and the data type for them is string.
Whenever a string is used, quotation marks are used around it. The quotation marks make it easier for the compilers and interpreters to identify string.
Hence,
The correct answer is:
Option D: Put Quotation marks around the string
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 table cell contains one piece of data
Answer:
Magnetism
Explanation:
Magnetism or magnetic energy is a natural phenomenon, we can find magnetism in some materials like nickel, cobalt, and iron, or their alloys are magnets, this was produced the first time in Greece at the city Magnesia del Meandro, for this city is the name magnetism, there were stones that attracted and this was called natural magnetism.
