R objects that reside in other R objects can require a lot of typing to access. For example, to refer to a variable x in a dataframe df , one could type df$x . This is no problem when the dataframe and variable names are short, but can become burdensome when longer names or repeated references are required, or objects in complicated structures must be accessed.
The database is attached to the R search path. This means that the
database is searched by R when evaluating a variable, so objects in
the database can be accessed by simply giving their names.