What does Load Type - Incremental (REQ) do?

What does Load Type - Incremental (REQ) do?

• A. Rebuilds the entire table
• B. Finds data that has changed since the last extraction, extracts the changes, and uses them to update the table in Clarity
• C. Archives old data
• D. Deletes all data

Answer: (B)

Incremental load is all about tracking what has changed since the last data extraction and applying only those changes to the target table. This approach runs faster and uses fewer resources because it doesn’t rebuild every row from scratch; instead, it identifies added, updated, or possibly deleted records since the previous run and updates the Clarity table accordingly. This is why the description that it finds data that has changed since the last extraction, extracts those changes, and uses them to update the table is the best fit. Why not the other options? Rebuilding the entire table would be a full refresh, which is unnecessary for incremental loads. Archiving old data and deleting all data describe different behaviors that aren’t about applying only the latest changes to keep the table synchronized.

Incremental load is all about tracking what has changed since the last data extraction and applying only those changes to the target table. This approach runs faster and uses fewer resources because it doesn’t rebuild every row from scratch; instead, it identifies added, updated, or possibly deleted records since the previous run and updates the Clarity table accordingly. This is why the description that it finds data that has changed since the last extraction, extracts those changes, and uses them to update the table is the best fit.

Why not the other options? Rebuilding the entire table would be a full refresh, which is unnecessary for incremental loads. Archiving old data and deleting all data describe different behaviors that aren’t about applying only the latest changes to keep the table synchronized.