Read urls stored in the local database

Usage

cas_read_db_urls(
  index = FALSE,
  db_connection = NULL,
  db_folder = NULL,
  index_group = NULL,
  ...
)

db_connection: Defaults to NULL. If NULL, uses local SQLite database. If given, must be a connection object or a list with relevant connection settings (see example).
...: Passed to cas_get_db_file().