OML4R has overloaded open source R functions that you can use to operate directly on data in Oracle Database and Oracle Autonomous Database instances.

The methods and functions are in packages that implement a transparency layer that translates R functions into SQL.

The OML4R transparency layer packages and the limitations of converting R into SQL are described in the following topics:

• About the Transparency Layer
  The Oracle Machine Learning for R transparency layer is implemented by the OREbase, OREgraphics, OREdplyr and OREstats packages.
• Transparency Layer Support for R Data Types and Classes
  Oracle Machine Learning for R transparency layer has classes and data types that map R data types to Oracle Database data types.