using System.Data;
using System.Data.OracleClient;
using Microsoft.Practices.EnterpriseLibrary.Data;
 
string sql = "DELETE from FFATA_RULES where N_ID = :N_ID";
Database db = DatabaseFactory.CreateDatabase();
System.Data.Common.DbCommand cmd = db.GetSqlStringCommand(sql);
db.AddInParameter(cmd, ":N_ID", DbType.Int32, ID);
db.ExecuteNonQuery(cmd);