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Which statement is correct about redefinition of simple States?
Suggested Answer: B
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In UML, a simple State can indeed be redefined, but the specifics of how it is redefined matter:
A is incorrect as redefinition of States, including simple States, is permitted.
B is correct. A simple State can be effectively removed or altered through redefinition in a derived StateMachine, which could include changing its type or characteristics.
C suggests that a simple State can be turned into a composite State. While theoretically possible in the context of redefinition, this option might be considered a significant alteration that could be misleading without additional context.
D is incorrect; UML does support State Redefinition.
UML Specification, particularly the sections on Redefinition and StateMachines.
Detailed rules on state redefinition are outlined in the UML 2.5 Documentation, specifically under StateMachine specializations.
38 comments · newest first
JO
Josue
10 months ago
Excluding it in a redefined StateMachine sounds right to me!
AL
Alease
10 months ago
Wait, is State Redefinition really not a UML capability?
RO
Rodolfo
10 months ago
I thought simple States couldn't be redefined at all.
DA
Daniela
10 months ago
Totally agree with option C! Makes sense.
JE
Jess
10 months ago
A simple State can definitely be redefined as a composite State!
GL
Glory
11 months ago
I vaguely recall that UML does allow for some form of State Redefinition, so I don't think D is correct.
AL
Allene
11 months ago
I'm a bit confused about option A. I thought simple States could be redefined, but now I'm not so sure.
AI
Aileen
11 months ago
I feel like I've seen a question similar to this before, and I think the answer was about how simple States can be redefined in certain contexts.
IR
Irma
11 months ago
I think I remember that a simple State can actually be redefined, but I'm not sure if it can be done as a composite State.
MO
Mozell
12 months ago
I'm pretty confident that the answer is A - a simple State cannot be redefined. That's a key principle of UML that I'm sure about.
LE
Levi
12 months ago
I remember learning about State Redefinition in class, so I think the correct answer is C. A simple State can be redefined as a composite State.
CA
Carmen
12 months ago
Option B seems plausible - a simple State can be redefined by excluding it in a redefined StateMachine. But I'm not 100% certain.
AN
Annamae
1 year ago
Hmm, I'm a bit confused on this one. I'll need to think it through carefully before selecting an answer.
RO
Robt
1 year ago
I'm pretty sure the answer is C. A simple State can be redefined as a composite State with one or more Regions.
LA
Latonia
1 year ago
C) A simple State can be redefined as a composite State with one or more Regions. That's the one that makes the most sense to me. I mean, what's the point of redefinition if you can't actually redefine the State?
MA
Markus
1 year ago
C) A simple State can be redefined as a composite State with one or more Regions.
WI
William
1 year ago
B) A simple State can be redefined by excluding it in a redefined StateMachine.
RY
Ryann
1 year ago
A) A simple State cannot be redefined
MA
Mabelle
1 year ago
A) A simple State cannot be redefined. Really? That can't be right. The whole point of redefinition is to allow you to add more detail to a State, isn't it? This answer just doesn't seem plausible.
AD
Adrianna
1 year ago
D) State Redefinition is not a UML capability.
LU
Luann
1 year ago
C) A simple State can be redefined as a composite State with one or more Regions.
KA
Kattie
1 year ago
B) A simple State can be redefined by excluding it in a redefined StateMachine.
DO
Dorthy
1 year ago
I'm not sure, but I think the correct answer is D.
AD
Adell
1 year ago
D) State Redefinition is not a UML capability. Hmm, I'm not sure about that. I thought the UML spec allowed for State redefinition, but maybe I'm mistaken.
MI
Miesha
1 year ago
B) A simple State can be redefined by excluding it in a redefined StateMachine. That's an interesting option, but I don't think it's correct. Redefinition typically involves adding more detail, not just removing a State.
GE
Genevive
1 year ago
C) A simple State can be redefined as a composite State with one or more Regions.
LI
Ling
1 year ago
A) A simple State cannot be redefined
SE
Serina
1 year ago
I disagree, I believe the correct answer is B.
KI
Kimbery
2 years ago
C) A simple State can be redefined as a composite State with one or more Regions. That's the correct answer, as the UML specification allows for the redefinition of a simple State to a composite State.
JE
Jess
1 year ago
D) State Redefinition is not a UML capability.
SA
Salley
1 year ago
C) A simple State can be redefined as a composite State with one or more Regions.
TA
Tarra
1 year ago
B) A simple State can be redefined by excluding it in a redefined StateMachine.
SU
Susy
1 year ago
A) A simple State cannot be redefined
SA
Santos
1 year ago
D) State Redefinition is not a UML capability.
DE
Destiny
1 year ago
C) A simple State can be redefined as a composite State with one or more Regions.
KR
Kristian
1 year ago
B) A simple State can be redefined by excluding it in a redefined StateMachine.
CH
Charlene
1 year ago
A) A simple State cannot be redefined
GA
Gail
2 years ago
I think the correct answer is C.