What is the recommended storage mode for a dimension table when optimizing query execution time with multiple fact tables?

Choosing Dual as the recommended storage mode for a dimension table when optimizing query execution time with multiple fact tables is appropriate due to the unique advantages of this mode. The Dual storage mode allows a table to be used both as an import table and as a DirectQuery table simultaneously. This flexibility is particularly beneficial in scenarios where a dimension table is often queried alongside multiple fact tables that may be stored differently.

By using the Dual mode, the dimension table can serve as an import table providing quick access to its data during the report execution, while also being able to dynamically pull data from the source when required. This balances performance and real-time data access, which is essential in a reporting environment where multiple fact tables may contain different slices of data.

In contrast, other storage modes such as DirectQuery and Import are limited in specific scenarios. With DirectQuery, the performance may suffer if the underlying data source is slow or if network latency is an issue, as it queries the data source in real-time. The Import mode, while typically faster for query execution due to all data being loaded into memory, would not be optimal if frequent updates to the dimension data are required or if there are performance considerations tied to using multiple fact tables concurrently.

Therefore, Dual is indeed