Salesforce DEX-450 Exam - Topic 7 Question 7 Discussion

Actual exam question for Salesforce's DEX-450 exam

Question #: 7
Topic #: 7

Given the following block code: try{ List retrievedRecords = [SELECT Id FROM Account WHERE Website = null]; }catch(Exception e){ //manage exception logic } What should a developer do to ensure the code execution is disrupted if the retrievedRecordslist remains empty after the SOQL query?

ACheck the state of the retrieveRecords variable and throw a custom exception if the variable is empty.

BCheck the state of the retrievedRecords variable and use System.assert(false) if the variable is empty

CCheck the state of the retrievedRecords variable and access the first element of the list if the variable is empty.

DReplace the retrievedRecords variable declaration from a List of Account to a single Account.

Show Suggested Answer

Suggested Answer: B

by Ma at May 03, 2022, 09:31 PM

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Magda

4 months ago

I agree with A, throwing an exception is the best practice here.

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Verda

4 months ago

Wait, can you really change the variable type like in D? Sounds risky!

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Nobuko

4 months ago

C won't work if the list is empty, that's just wrong.

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Cornell

4 months ago

B seems a bit harsh, why assert false?

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Andra

4 months ago

A is definitely the way to go! Custom exceptions are useful.

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Josphine

5 months ago

I don't think accessing the first element of an empty list is a good idea. That would definitely cause an error.

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Lucina

5 months ago

I recall a similar question where we had to handle empty lists, and I think throwing a custom exception was the best practice.

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Billy

5 months ago

I think we should check if the retrievedRecords list is empty and throw a custom exception. That seems like the right way to handle it.

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Arminda

5 months ago

I'm not entirely sure, but using System.assert(false) feels a bit off for this situation. I remember it being more for testing purposes.

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Rolland

5 months ago

I'm pretty confident the answer is B, Evaluation and acceptance. That's the phase where the final system is tested and validated against the original requirements and design. The documentation and training for end users would also happen during this phase before the system is officially accepted.

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Elmer

5 months ago

Hmm, this looks like a tricky one. I'll need to carefully read through the options and think about the implications of each.

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Belen

5 months ago

I'm not entirely sure about this one. I'll need to think it through carefully and maybe even look up some additional information on key management in the cloud.

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Fairy

5 months ago

Hmm, I'm a little unsure about this one. I'll need to think it through carefully to make sure I don't miss anything.

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