Tutorial: Load and transform data using Apache Spark ... - Databricks
https://docs.databricks.com:443/en/getting-started/dataframes.html
WEBApache Spark DataFrames are an abstraction built on top of Resilient Distributed Datasets (RDDs). Spark DataFrames and Spark SQL use a unified planning and optimization engine, allowing you to get nearly identical performance across all supported languages on Databricks (Python, SQL, Scala, and R).
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