A data locator is a data URI that permits to locate precisely a data resource. It's the unique identifier of a data resource
path[@connection]
where:
# Absolute path
[catalog.][schema.]table@databaseName
# Relative path
//.otherschema.table@databaseName
# Absolute path
/dir1/dir2/file.extension@fileConnection
# Relative path
../dir/file.extension@fileConnection