Answer:
The correct option to the following question is A.)
.
Explanation:
A Timecard is an application which is used for recording the times the user is working and it is an application for record the time upon logging in to the Web Timesheet, a user punches out and into the mark time they stop and start the works, along with the any comment they choose to enter.
It's a malware, and it basically let's the person/hacker/culprit get information off your computer without the owner of the computer knowing that the person is doing it. It's often used to find keystrokes, passwords, online interaction, and other personal data.
Answer:
El consumo del taller es de 3.7 kw/h.
Explanation:
Dado que el taller posee dos taladros de sobremesa de 600 vatios de potencia, que son utilizados durante 2 horas diarias; una sierra de calar de 500 vatios de potencia que es utilizada durante 1 hora diaria, y cuatro soldadores de 50 vatios que se utilizan durante 4 horas diarias, para medir el consumo diario de energía del taller es necesario realizar el siguiente calculo:
600 x 2 x 2 = 2,400 vatios de consumo taladros
500 x 1 x 1 = 500 vatios de consumo sierra de calar
50 x 4 x 4 = 800 vatios de consumo soldadores
2,400 + 500 + 800 = 3,700 vatios de consumo total
Pasado a kilovatios, el consumo del taller es de 3.7 kw/h.
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.
