INF2603_Assessment_4_Answers

Assessment 4: Attempt review https://mymodules.dtls.unisa.ac.za/mod/quiz/review.php?attempt=178




UNISA  2024  INF2603-24-Y  Welcome Message  Assessment 4

QUIZ




Started on Thursday, 18 April 2024, 3:30 PM
State Finished
Completed on Thursday, 18 April 2024, 3:56 PM
Time taken 25 mins 45 secs
Grade 19.00 out of 20.00 (95%)


Question 1

Correct

Mark 1.00 out of 1.00




Students and classes have a _____ relationship.


a. one-to-one
b. one-to-many
c. many-to-one
d. many-to-many 



The correct answer is: many-to-many




Question 2

Correct

Mark 1.00 out of 1.00




Which of the following is true of business rules?


a. They allow the designer to set company policies with regard to data.
b. They allow the designer to develop business processes.
c. They can serve as a communication tool between the users and 
designers.
d. They provide a framework for the company's self-actualization.



The correct answer is: They can serve as a communication tool between the
users and designers.




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,Assessment 4: Attempt review https://mymodules.dtls.unisa.ac.za/mod/quiz/review.php?attempt=178


Question 3

Correct

Mark 1.00 out of 1.00




A(n) _______ enables a database administrator to describe schema components.


a. extensible markup language (XML)
b. data de�nition language (DDL) 
c. uni�ed modeling language (UML)
d. query language



The correct answer is: data de�nition language (DDL)




Question 4

Correct

Mark 1.00 out of 1.00




Each row in the relational table is known as a(n)  .
entity instance




The correct answer is: entity instance




Question 5

Correct

Mark 1.00 out of 1.00




_____ are important because they help to ensure data integrity.


a. Attributes
b. Entities
c. Relationships
d. Constraints 



The correct answer is: Constraints




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