Data blending is a powerful feature in Tableau that enables you to connect and analyze data from multiple sources without the need for complex data transformations or restructuring. It is especially useful when you have data models with different levels of granularity or when you want to combine data from disparate systems. By blending data, you can create comprehensive visualizations and gain insights by leveraging the strengths of each data source.

Data blending in Tableau refers to the process of combining data from multiple sources or different tables within a single data source. It allows you to analyze and visualize data that cannot be joined together using traditional database techniques. For example, you can blend data from an Excel spreadsheet with data from a relational database. Tableau automatically determines the relationships between the tables based on common field names or key values.

Data blending in Tableau is like creating a unified view of data from separate sources. It helps you bring together structured and unstructured data, combine internal and external data, and incorporate data from various file formats. By blending data, you can unlock hidden relationships and patterns, and seamlessly blend data without having to create complex SQL queries or customized data sources. This flexibility enables you to focus on analysis and visualization rather than data preparation, ultimately leading to more accurate and insightful reports and dashboards.