Hitachi Vantara HCE-5920 Exam - Topic 4 Question 56 Discussion

Actual exam question for Hitachi Vantara's HCE-5920 exam

Question #: 56
Topic #: 4

In a PDI transformation you are retrieving data from a large lookup table using a Database Lookup step from improve performance, you enable caching in the step and use the Load all data from table option.

In this scenario, which three statement s are correct about the data flow of the 'Database Lookup step? (Choose three.)

AWhen caching is enable, only rows with matching lookup values will passed through.

BThere must be enough allocated heap space to store the lookup fields allocated heap space to store the lookup fields in memory.

CCached comparisons are case sensitive.

DEvery input row must have only one matching row in the lookup table

EOnly one matching row is used from the Lookup table.

Show Suggested Answer

Suggested Answer: A, B, C

by Lettie at Sep 18, 2024, 11:05 AM

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My

3 months ago

B is crucial, without enough heap space it won't work!

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Dorian

3 months ago

E seems off, you can have multiple matches but only one is used.

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Crissy

3 months ago

Wait, are cached comparisons really case sensitive?

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Andree

4 months ago

I disagree with D, multiple matches can happen.

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Frank

4 months ago

A and B are definitely correct!

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Giovanna

4 months ago

I feel like option D is tricky; I thought every input row could have multiple matches, but maybe that's not the case here.

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Maurine

4 months ago

I practiced a similar question where case sensitivity was mentioned, but I can't recall if it's true for cached comparisons.

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Jeffrey

4 months ago

I think option B is definitely correct because if there's not enough heap space, the lookup won't work properly.

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Cary

5 months ago

I remember something about caching, but I'm not sure if it only passes matching rows or if it can pass others too.

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Iluminada

5 months ago

I'm feeling pretty confident about this one. The caching and lookup behavior is something I've worked with before, so I should be able to identify the correct statements.

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Marsha

5 months ago

Okay, I think I've got a handle on this. The key is understanding how caching works in the Database Lookup step and the implications for performance and data flow.

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Hillary

5 months ago

Hmm, I'm a bit confused about the "Load all data from table" option. Does that mean the entire lookup table is loaded into memory? I'll need to double-check that.

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Kayleigh

5 months ago

This looks like a tricky question about database lookup caching. I'll need to carefully read through the options and think through the data flow.

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Lizbeth

5 months ago

This is a good opportunity to demonstrate my understanding of PDI data flow and lookup performance optimization. I'll make sure to read each option carefully.

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Latosha

5 months ago

Psychometric testing feels more like an HR function, and I'm pretty certain that deciding strategic objectives falls outside an operational line manager's duties.

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