How does this method handle the case of the fields? The SQL standard does not specify whether field names are stored in lower, mixed, or upper case and each DBMS has its own choice. (This is how they're stored and returned from a query , not how they're used in SQL which must be case insensitive unless quoted). DBI makes this explicit with (and recommends the use of) $sth->{NAME_lc} and $sth->{NAME_uc} rather than the kind of generic query that Recordset seems to use. Also, presumbably Recordset has equivalents of DBI's table_info() and type_info(), etc. for other kinds of metadata?