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Big Data & Data Engineering
Q89 / 100
What is "Z-ordering" (multi-dimensional clustering) used for in lakehouse tables?
Correct! Well done.
Incorrect.
The correct answer is A) It co-locates related data across multiple columns within files, improving data skipping for queries that filter on those columns
A
Correct Answer
It co-locates related data across multiple columns within files, improving data skipping for queries that filter on those columns
Explanation
Z-ordering interleaves values from multiple columns so that files contain a narrower range of values for each, allowing more files to be skipped when filtering on those columns.
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