Let
.docx
|
|
Correct answer is |
(c) |
|
|
Your score on this question is: |
0.00 |
|
|
Feedback: |
See section 3.1.5 of the course notes. |
|
|
|
10. |
|
Which of the following describes the way a software product should react to incorrect and/or incomplete input? |
|
|
|
|
(a)
It should raise a system error during processing and wait for user
correction.
(b)
It should attempt to detect the illegal input before processing
and ask the user to correct the input.
(c)
It should raise a system error during processing and end the
program.
(d)
It should end the program after telling the user why the data is
bad.
|
|
Correct answer is |
(b) |
|
|
Your score on this question is: |
8.33 |
|
|
Feedback: |
See section 3.1.5 of the course notes. |
|
|
|
11. |
|
What is the definition of the key for an entity in an entity-relationship model? |
|
|
|
|
(a)
It is the attribute, or combination of attributes, that uniquely
identifies an entity.
(b)
It is not a well-defined concept for all entities.
(c)
It is the attribute that most completely identifies an
entity.
(d)
It is the means of gaining access to an entity in a secure
database.
|
|
Correct answer is |
(a) |
|
|
Your score on this question is: |
0.00 |
|
|
Feedback: |
See section 3.2 of the course notes. |
|
|
|
12. |
|
Entity-relationship modeling is a formal technique oriented to modeling |
|
|
|
|
(a)
process logic
(b)
control flow
(c)
data objects
(d)
data flow
|
|
Correct answer is |
(c) |