What is one of the main benefits of using published data sources in Tableau?

Using published data sources in Tableau provides a centralized version of the truth for data, which is one of the main benefits. This centralized approach ensures that all users and teams within an organization are accessing the same version of the data, thereby promoting data consistency and reliability. It eliminates discrepancies that may arise from different users working with their own local copies of data or independently created data sources. By having a single, authoritative source of data, organizations can make more informed decisions based on accurate information, improving overall data governance and trust in the insights derived from analytics.

The other options highlight factors that detract from the advantages of using published data sources. For instance, the requirement for local database drivers complicates connectivity rather than simplifying it, which is contrary to the goal of using published data sources. Additionally, published data sources are designed to enhance server efficiency by reducing redundancy rather than decreasing it. Finally, published data sources inherently promote data source sharing among users, rather than preventing it, facilitating collaboration and standardized reporting across the organization.