数据库中包含有某个实体信息的字段。 In database, a field that contain information about an entity.
根据由每项中所含关键字或字段所确定的规则，将数据排列成某种所需次序的过程。 The process of arranging data into some desired order according to rules dependent upon a key or field contained in each item.
一个空白字段描述符是在输出中形成空格的描述符。 A blank field descriptor is a descriptor to make blank on output.
一种插入一些无意义字符的处理方法。例如，在一个字段、记录或固定长度数据块的不用部分插入空字符、零或空格。 The process of inserting meaningless characters, such as null characters, zeros, or spaces, into the unused portions of a field, record, or fixed- length block of data.