What is one advantage of using relationships when creating a new data source from multiple tables?

Using relationships when creating a new data source from multiple tables offers the significant advantage of allowing the join type to be dynamic and selected at query time. This means that when you set up relationships in Tableau, the exact way that the data is combined can change depending on the context of the query.

For instance, if you are analyzing data with varying requirements or filters, each query can determine the most appropriate way to join data from different tables. This flexibility can lead to more accurate and relevant insights because the joins adapt to the specific levels of detail or filters being applied at the time of the analysis.

Contrast this with static join types, which are predetermined and do not change regardless of the context; they can limit the versatility of your analysis. Other methods, like using only inner joins, also restrict the way data can be combined, potentially leading to incomplete datasets in certain analyses. The ability to dynamically adjust join types enhances the analytical capabilities of Tableau and makes it easier to work with complex data relationships.