alias               Database alias structure
 byte                Signed byte (char) data type
 char                String data type
 date                Date data type
 dbl                 Double-precision floating-point data type
 file                Buffered file structure
 int                 Integer data type
 logical             Boolean data type
 long                Long integer data type
 memo                Memo field structure
 ptr()               Pointer data type
 uint                Unsigned integral data type
 ulong               Unsigned long integral data type
 untyped             Generic object data type