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iSQI IREB_CPRE_FL Exam - Topic 7 Question 2 Discussion

You model invoices and invoice items with a UML class diagram. Explanation: The total amount of an invoice is calculated by summing up all individual invoice items. This means that an invoice showing 5 article prices contains 5 invoice items. What model element most accurately describes the relationship between invoice and invoice items? (1 Point)
A) Composition
B) Aggregation
C) Generalisation
D) Association

iSQI IREB_CPRE_FL Exam - Topic 7 Question 2 Discussion

Actual exam question for iSQI's IREB_CPRE_FL exam
Question #: 2
Topic #: 7
[All IREB_CPRE_FL Questions]

You model invoices and invoice items with a UML class diagram. Explanation: The total amount of an invoice is calculated by summing up all individual invoice items. This means that an invoice showing 5 article prices contains 5 invoice items. What model element most accurately describes the relationship between invoice and invoice items? (1 Point)

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Suggested Answer: A

by Emerson at May 06, 2022, 11:12 PM

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Gracie
10 months ago
Association seems too loose for this kind of relationship.
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Corinne
10 months ago
Generalization doesn't make sense in this context.
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Oren
10 months ago
Wait, could it be aggregation instead? Not so sure.
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Louann
10 months ago
Totally agree, composition fits perfectly here!
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Aleta
11 months ago
It's definitely a composition relationship.
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Lisbeth
11 months ago
This reminds me of a practice question where we had to differentiate between aggregation and composition. I think this one leans more towards composition.
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Maurine
11 months ago
I'm a bit unsure, but I think aggregation could also fit because the invoice can exist without the items if it's just a placeholder.
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Chanel
11 months ago
I remember we discussed that composition implies a strong lifecycle dependency, so I think it might be composition since the invoice items can't exist without the invoice.
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Dannie
11 months ago
I feel like association could be a possibility too, but it seems too loose for this scenario. I’m leaning towards composition as well.
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Kristian
11 months ago
Okay, let me think this through. The key details are that this is the phase after powering on the EFI system and before the PEI. That sounds like the Pre-EFI initialization phase to me, so I'll go with A.
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Dean
11 months ago
Okay, I've got this. The key is to link the Customers data extension to the data model using the Customer ID, and then connect the Orders data extension to the Customers data extension using a One-to-Many relationship. That should give me the data I need to set up the Journey.
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Quentin
11 months ago
I remember something about bursts of activity in our study sessions. That might relate to performance spikes during testing, but I can't recall if it's the right option.
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Kristel
11 months ago
Okay, I've got a strategy for this. I'll think about which industries rely more on borrowing and financing, as those would likely be hit harder by rate hikes. Public utilities and brokers seem like good options.
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Martina
11 months ago
Okay, I think I've got this. The key is that the bank accepted the money on Monday and didn't purchase the securities by the end of Tuesday. Based on that, I believe the correct answer is B - the bank must purchase the securities before the close of business on Wednesday.
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