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Question 43 - DP-600 discussion

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You need to create a data loading pattern for a Type 1 slowly changing dimension (SCD).

Which two actions should you include in the process? Each correct answer presents part of the solution.

NOTE: Each correct answer is worth one point.

A.
Update rows when the non-key attributes have changed.
Answers
A.
Update rows when the non-key attributes have changed.
B.
Insert new rows when the natural key exists in the dimension table, and the non-key attribute values have changed.
Answers
B.
Insert new rows when the natural key exists in the dimension table, and the non-key attribute values have changed.
C.
Update the effective end date of rows when the non-key attribute values have changed.
Answers
C.
Update the effective end date of rows when the non-key attribute values have changed.
D.
Insert new records when the natural key is a new value in the table.
Answers
D.
Insert new records when the natural key is a new value in the table.
Suggested answer: A, D

Explanation:

For a Type 1 SCD, you should include actions that update rows when non-key attributes have changed (A), and insert new records when the natural key is a new value in the table (D). A Type 1 SCD does not track historical data, so you always overwrite the old data with the new data for a given key. Reference = Details on Type 1 slowly changing dimension patterns can be found in data warehousing literature and Microsoft's official documentation.

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asked 02/10/2024
James Williams
34 questions
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