Forum Discussion
Helper IMCQ on PL 300
Hi saud968, thank you for response, I didn't understand 100% what you explained. Although your response gave me a bit of knowledge, I did a bit of research from myself based on basket analysis. Surrogate keys are necessary basket analysis. I understood the answer.
My anslysis :-
1. Columns like OrderID, ProductID, and Quantity are crucial for understanding which products are frequently purchased together.
2. Columns such as CustomerID, OrderDate, and OrderTime can help identify customer behavior and trends.
3. Columns like SalesAmount, Revenue, and Profit are essential for measuring the financial impact of product combinations.Statement 1: The SalesRowID and AuditID columns can be removed from the model without impeding the analysis goals.
- Explanation: Yes. These columns are primarily used for tracking changes and auditing purposes within the source system. They are not directly relevant to the basket analysis, which focuses on identifying product relationships based on sales data.
Statement 2: Both the OrderDateKey and OrderDate columns are necessary to perform the basket analysis.
- Explanation: No. While the OrderDate column provides a human-readable format, the OrderDateKey is a surrogate key that can be used more efficiently in calculations and joins. For most analysis purposes, the OrderDateKey is sufficient. However, if you need to display the date in a human-readable format, you can use the OrderDate column.
Statement 3: The TaxAmt column must retain the current number of decimal places to perform the basket analysis.
- Explanation: No. The level of precision required for the TaxAmt column depends on the specific business requirements and the desired level of accuracy in the basket analysis. If the analysis does not require extreme precision, you can consider reducing the number of decimal places to improve query performance and storage efficiency.
Helper IHi saud968 explain me the answer you are just copy and pasting from answerbook and i have that.
I need the clarity behind selection of this answer
Memorable MemberSure no problem,
First answer, Both SalesRowID and AuditID are typically surrogate keys or metadata, not directly needed for basket analysis. They don’t impact the analysis of product combinations, so they can likely be removed to optimize the model.
Second, The OrderDateKey is a surrogate key and can likely be linked to a dimension table for analysis. Only one of these is likely required, not both. The date information can still be derived from the OrderDateKey in many cases.
Third, The precision of the TaxAmt column isn’t typically essential for a basket analysis. Basket analysis focuses on product combinations, and small rounding differences in tax amounts won’t affect the results
Hope this helps you out.
Best Regards
Saud Ansari
If this post helps, please Accept it as a Solution to help other members find it. I appreciate your Kudos!
- saud968
subha257 no disrespect however if ou still do not understand then you will need to study about basket analysis.
Below is the youtube video to help you understand the concept
https://youtu.be/vK_njDjjP6I?si=HhqiE1J6Tp4prSb-
Best Regards
Saud Ansari
If this post helps, please Accept it as a Solution to help other members find it. I appreciate your Kudos!- subha257
Hi saud968, thank you for response, I didn't understand 100% what you explained. Although your response gave me a bit of knowledge, I did a bit of research from myself based on basket analysis. Surrogate keys are necessary basket analysis. I understood the answer.
My anslysis :-
1. Columns like OrderID, ProductID, and Quantity are crucial for understanding which products are frequently purchased together.
2. Columns such as CustomerID, OrderDate, and OrderTime can help identify customer behavior and trends.
3. Columns like SalesAmount, Revenue, and Profit are essential for measuring the financial impact of product combinations.Statement 1: The SalesRowID and AuditID columns can be removed from the model without impeding the analysis goals.
- Explanation: Yes. These columns are primarily used for tracking changes and auditing purposes within the source system. They are not directly relevant to the basket analysis, which focuses on identifying product relationships based on sales data.
Statement 2: Both the OrderDateKey and OrderDate columns are necessary to perform the basket analysis.
- Explanation: No. While the OrderDate column provides a human-readable format, the OrderDateKey is a surrogate key that can be used more efficiently in calculations and joins. For most analysis purposes, the OrderDateKey is sufficient. However, if you need to display the date in a human-readable format, you can use the OrderDate column.
Statement 3: The TaxAmt column must retain the current number of decimal places to perform the basket analysis.
- Explanation: No. The level of precision required for the TaxAmt column depends on the specific business requirements and the desired level of accuracy in the basket analysis. If the analysis does not require extreme precision, you can consider reducing the number of decimal places to improve query performance and storage efficiency.
- saud968
I am happy that I was able to help a little. We all learn as we progress, I will suggest being active in the community. Keep posting as it will help others as well, I learned something new today.
If somehow I helped you out, please accept my answer as a solution 🙂.
Best Regards
Saud Ansari
If this post helps, please Accept it as a Solution to help other members find it. I appreciate your Kudos!