Data Engineer · Junior · Theory

What are slowly changing dimensions, SCDs, and what types do you know?

~4 min by voice

How to approach it

The interviewer checks whether the candidate understands why a data warehouse tracks changes to reference attributes over time and how the main approaches differ: overwriting, row versioning, and a column with the previous value.

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Answers0

Avg. score—

Strong—

Practiced0

Topics

data modeling scd

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

Best with headphones · ~4 min