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Oksi-84 [34.3K]
3 years ago
5

What are entity-relationship diagrams and how are they used? What symbol is used for a relationship? What is an associative enti

ty? Provide an example.
Computers and Technology
1 answer:
castortr0y [4]3 years ago
4 0

Answer:

The definition including its given problem is outlined in the following segment on the clarification.

Explanation:

  • Entity-relationship (ER) diagram describes how mechanical stored procedures are constructed and demonstrate the overarching representation of the situation. It also describes the connections between some of the entities of the framework and even the comparison with standard measurements.
  • For something like an individual relationship structure, the normal representation of connections seems to be a diamond. Associative institutions have several to many partnerships to communicate with. It's indeed the verb throughout a diamond-shaped form that holds two organizations around each other. This verb is in fact an entity on its own, therefore it must be termed an associative entity.
  • An illustration of such might be if a participant were to register for a class. Multiple individuals will be registered for several courses, and there have been many to several relationships; thus, the associative object will indeed register.
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Write the definition of a function typing_speed, that receives two parameters. The first is the number of words that a person ha
Lera25 [3.4K]

Answer:

The definition of function is as follows:

def typing_speed(number_of_words,Time_Interval):

number_of_words>=0  

Time_Interval>0

speed=float(60*number_of_words/Time_Interval)

return speed

Explanation:

Above function is defined step-by-step as follows:

        def typing_speed(number_of_words,Time_Interval):

  • A function named typing speed has two arguments, num_of_words and Time_Interval.

                             number_of_words>=0  

                             Time_Interval>0

  • The variable number_of_words is the number of words entered that a person enters, they must be greater than or equal to 0. Where as Time_Interval is the variable for counting the time span in seconds, it must be greater than 0.

                    speed=float(60*number_of_words/Time_Interval)

                    return speed

  • For determining result firstly the seconds are converted int minutes by multiplying with 60 and number_of_words is divided with Time_Interval in order to get words per minute. The return value will give speed which has data type float.

4 0
3 years ago
Write a program that prompts the user to enter a date, using integer values for the month, day, and year, and then prints out th
attashe74 [19]

Answer:

import datetime

user = input("Enter date in yyyy,m,d: ").split(",")

int_date = tuple([int(x) for x in user])

year, month, day =int_date

mydate = datetime.datetime(year, month, day)

print(mydate)

x = mydate.strftime("%B %d, %Y was a %A")

print(x)

Explanation:

The datetime python module is used to create date and time objects which makes it easy working with date-time values. The user input is converted to a tuple of integer items, then they are converted to date time objects and parsed to string with the strftime method.

5 0
3 years ago
Is a storyboard an example of an implemation tool?
goblinko [34]
Yes, the answer is true.
8 0
3 years ago
Read 2 more answers
What option defines green computing?
Alina [70]
Green computing is the environmentally responsible and eco-friendly use of computers and their resources. In broader terms, it is also defined as the study of designing, manufacturing/engineering, using and disposing of computing devices in a way that reduces their environmental impact.
8 0
3 years ago
An indication of delayed fuel ignition could be​
Sophie [7]

Answer:

The ignition delay in a diesel engine is defined as the time interval between the start of injection and the start of combustion. This delay period consists of (a) physical delay, wherein atomisation, vaporization and mixing of air fuel occur and (b) of chemical delay attributed to pre-combustion reactions. Physical and chemical delays occur simultaneously.

Hope This Helps!     Have A Nice Day!!

6 0
3 years ago
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