Learn the best practices for updating legacy data sources, including the importance of codebooks in documenting field changes for data consistency and efficient data management.
Table of Contents
Question
Which of the following is a best practice when updating a legacy data source?
A. Placing old data in new fields
B. Keeping only the most recent data
C. Creating a codebook to document field changes
D. Removing the data source from production
Answer
C. Creating a codebook to document field changes
Explanation
Updating a legacy data source requires careful documentation of any modifications to ensure data consistency and future reference. A codebook serves as a comprehensive guide outlining the changes made to fields, including their original and updated definitions, data types, and any transformations applied.
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