int type - Identifies the type of the column.

int length - Contains the maximum length for a character data type.

int prec - Contains the number of digits of mantissa precision.

int scale - Total number of significant digits to the right of decimal point.

int radix - Radix of PREC if TYPE is one of the approximate numeric types.

int null - Contains 0 (XO_NO_NULLS) if not nullable, 1 (XO_NULLABLE) if column is nullable.