DA0-001 · Question #284
DA0-001 Question #284: Real Exam Question with Answer & Explanation
The correct answer is C: Merge all date columns and unify the format.. When dealing with multiple date columns from different data sources, it's crucial to ensure consistency and accuracy in the dataset. The best practice is to merge the date columns and standardize the date format across the entire dataset. This approach helps maintain data integri
Question
A data analyst received a large amount of third-party data that needs to be joined with in-house data files. After the data is joined, the analyst notices three columns all contain dates. Which of the following should the analyst do to maintain data consistency?
Options
- AAppend all date columns and parse the strings.
- BImpute all three date columns and then merge.
- CMerge all date columns and unify the format.
- DSeparate the columns into a table and merge.
Explanation
When dealing with multiple date columns from different data sources, it's crucial to ensure consistency and accuracy in the dataset. The best practice is to merge the date columns and standardize the date format across the entire dataset. This approach helps maintain data integrity, simplifies analysis, and avoids confusion that could arise from having multiple date formats. Unifying the date format is particularly important when the data will be used for time series analysis or when dates are key to joining with other datasets.
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