释义 |
count-key-dataCKDdevice :count field,usually followed by a key field,followed by the actual data of a record.The count field contains, among others,the address of the record in the format CCHHRCC=cylinder number, HH=head number,R=record numberand the length of the data;the key field contains the record's keysearch argument.;一种磁盘存储设备,它所存储的数据按如下的格式:计数字段,通常后跟一个键字段,再后面就是记录中的实际数据。其中的计数字段包含记录的地址和数据的长度等,地址的格式为CCHHRCC=柱面号, HH=磁头号, R=记录号;键字段含有记录的关键字检索参量。 |