C_HAMOD_2404 Exam Dumps - SAP Certified Associate - Data Engineer - SAP HANA

Avoid defining joins on calculated columns (A):Joins on calculated columns can significantly impact performance because they require calculations before the join operation. It is better to minimize such scenarios.

Include all data flow logic within one calculation view (B):Consolidating logic within a single calculation view reduces complexity and improves maintainability, avoiding unnecessary data movement across multiple views.

Options C and D are less optimal because defining filters or aggregations on calculated columns can increase the computational overhead.

TheDynamic Joinoption in SAP HANA calculation views enables flexibility when joining tables with multiple columns. The reasons for enabling it include:

B. To allow data analysis at different levels of granularity with the same calculation view: Dynamic joins adjust to the query’s granularity requirements, enabling analysis at various levels without redesigning the calculation view.

D. To ensure that the join execution uses only the join columns requested in the query: This ensures efficient execution by only processing the relevant columns, reducing unnecessary computations.

To view data for the United States when querying aCUBE calculation view, the user must have:

SELECT privilege on the CUBE calculation view: To execute queries on the view.

Analytic Privilege (Country United States) on the DIMENSION calculation view: This restricts access based on the country dimension to only "United States" data.

Analytic privileges must be defined appropriately on both views to enforce the required data access.

TheDebug Query modein SAP HANA allows you to generate and execute SQL for a specific node in your calculation view. This mode is used to analyze the behavior of individual nodes in a calculation view and troubleshoot issues such as unexpected data output or performance bottlenecks.

The simplest approach to create the required output from the provided table is to implement aUnion Nodein the calculation view and map each year as a separate column. This method efficiently aligns data across different columns without needing extensive calculations or additional filter expressions. It provides a structured output while minimizing complexity in the model.(Reference: SAP HANA Calculation View Modeling)