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In a Value Driver Tree (VDT) within SAP Analytics Cloud, node relationships can be determined using a dimension hierarchy and story calculated measures. A dimension hierarchy helps to visually represent and navigate the relationships between various nodes in a structured manner, reflecting the logical and hierarchical relationships inherent in the data. Story calculated measures allow for the creation of custom calculations that can define the relationships between nodes in terms of mathematical or logical operations, providing a dynamic way to analyze how changes in one node might affect others.

References:

• SAP Analytics Cloud Help Documentation: Value Driver Trees
• SAP Analytics Cloud User Guide: Working with Dimension Hierarchies and Calculated Measures in VDT

In SAP Analytics Cloud, data concatenation can be performed on Embedded datasets, Standalone datasets, and Imported data models. This process involves combining data from multiple sources or tables into a single dataset or model, providing a unified viewof the data. This is particularly useful for analyses that require a comprehensive dataset compiled from various data sources.

References:

• SAP Analytics Cloud Help Documentation: Working with Datasets
• SAP Analytics Cloud User Guide: Concatenating Data in Models and Datasets

To combine two dimensions, Firstname and Lastname, into a single dimension displaying as Lastname, Firstname in a live data model, you should create a calculated dimension in the data model. This calculated dimension will concatenate the two fields into one, according to the specified format. This approach allows for the creation of a new dimension that can be used across various reports and analyses within the model, maintaining the integrity of the original dimensions.

References:

• SAP Analytics Cloud Help Documentation: Creating Calculated Dimensions
• SAP Analytics Cloud User Guide: Data Modeling Best Practices