Oracle 中GetDataDictionary()

 /// <summary>
        /// 根据schema和region得到相应的数据字典
        /// </summary>
        /// <returns></returns>
        public DataSet GetDataDictionary(string schema,string datasource)
        {
            DatabaseManager dbMgr = GetDatabaseManager(datasource);
            PreparedStatement sql = new PreparedStatement();

            //string schema = GetSchema();
           
            string name = GetName();

            if (!String.IsNullOrEmpty(schema))
            {
                sql.SqlText = "select lower(column_name) name, data_type type, nullable,data_scale scale from all_tab_columns where table_name =:table_name and owner= :schema order by column_id";
                sql.Parameters.Add(new Parameter(":table_name", name.ToUpper(), DbType.AnsiStringFixedLength));
                sql.Parameters.Add(new Parameter(":schema", schema.ToUpper(), DbType.AnsiStringFixedLength));
            }
            else
            {
                sql.SqlText = "select lower(column_name) name, data_type type, nullable,data_scale scale from user_tab_columns where table_name = :tablename order by column_id";
                sql.Parameters.Add(new Parameter(":tablename", name.ToUpper(), DbType.AnsiStringFixedLength));
            }

            DataSet ds = dbMgr.GetDataSet(sql);
            return ds;
        }