Generic function, returning subrelations for x
.
subrelations(x, ...)
A relation-type object, or a list of relation-type objects if the
subrelation isn't vectorised. For example, if x
is a
database
, the result is the contained relation
.
an R object, intended to be some sort of database-like object that
contains relations, such as a database
object.
further arguments passed on to methods.