Returns a logical value indicating whether a copy of the database exists. It also returns
a files attribute that lists which copies of the database are found.
Arguments
target
A character string specifying the path where to look for the database file.
Author
Pepijn de Vries
Details
When arguments are omitted, this function will look in the default directory (get_ecotox_path()).
However, it is possible to build a database file elsewhere if necessary.