Several packages on CRAN provide (or relate to) interfaces between databases and R. Here is a summary, mostly in the words of the package descriptions. Remember that package names are case-sensitive.
The packages that talk about being DBI-compliant are referring to the
DBI package (see below in “Other SQL”).
dbConnect: Provides a graphical user interface to connect with databases that use MySQL.
RMySQL: The current version complies with the database interface definition as implemented in the package
TSMySQL provides a MySQL interface for
TSdbi. Comprehensive examples of all the TS* packages are provided in the vignette Guide.pdf with the
TSdata package. Read more →