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MuleSoft Exam MCD-Level1-Delta Topic 1 Question 3 Discussion

Actual exam question for MuleSoft's MCD-Level1-Delta exam
Question #: 3
Topic #: 1
[All MCD-Level1-Delta Questions]

A Database On Table Row listener retrieves data from a CUSTOMER table that contains a primary key userjd column and an increasing kxjin_date_time column. Neither column allows duplicate values.

How should the listener be configured so it retrieves each row at most one time?

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Suggested Answer: A

by Kimbery at Apr 08, 2024, 01:57 AM

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Monroe
12 months ago
I believe setting the watermark column to the user_Id column is the best option to ensure each row is retrieved only once.
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Thersa
1 years ago
I think setting the target value to the last retrieved user_jd value would also work to prevent duplicates.
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Jeannetta
1 years ago
I agree with Ciara, setting the watermark column to login_date_time should prevent duplicates.
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Ciara
1 years ago
I think we should set the watermark column to the login_date_time column.
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Adelina
1 years ago
That's a good point, retrieving each row at most one time is important to prevent duplicates in the database.
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Barney
1 years ago
I think setting the target value to the last retrieved user_jd value makes more sense to avoid retrieving duplicate rows.
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Carrol
1 years ago
I disagree, I believe setting the target value to the last retrieved login_date_time value is the correct configuration.
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Adelina
1 years ago
I think the listener should be configured to set the watermark column to the user_Id column.
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Lauran
1 years ago
You know what, I'm just going to go with option B. Setting the target value to the last retrieved login_date_time value sounds the most straightforward to me. Worst case, I can always explain my reasoning if I get it wrong.
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Vonda
1 years ago
Hmm, I think the key here is to use the right columns as the watermark and target value. Since the user_id column and the login_date_time column are both unique, we need to use one of them to ensure we don't retrieve the same row multiple times.
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Mireya
1 years ago
I'm not too sure about this question. The options seem a bit confusing to me. How are we supposed to configure the listener to retrieve each row at most one time?
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Leandro
1 years ago
I'm not sure, maybe we need to set the target value to the last retrieved user_jd value.
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Kirk
1 years ago
No, I believe we should set the watermark column to the begin_date_time column.
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Asha
1 years ago
I think we need to set the watermark column to the user_Id column.
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