SQ L*Loader is a utility that can perform which two tasks？（）
- ALoad data from a disk， tape， or named pipes.
- BLoad data into an Oracle database using DML statements.
- CExtract， reorganize， and insert data within an Oracle database.
- DLoad data from external files into tables in an Oracle database.
- ELoad data into an Oracle database using operating system commands.
- FLoad data directly from a non-Oracle database to an Oracle database.