With sequentialaccess, the disk head can move directly to the next available track on the disk.
使用顺序访问,磁盘头可以直接移动到磁盘的下一个可用磁道。
2
DB2 row compression features can decrease disk storage requirements while at the same time improve sequential read access of large queries which perform full table scans.
DB 2行压缩功能可以减少磁盘存储需求,同时改进执行全表扫描的大量查询的顺序读取访问。
3
As a result, the diskaccess time is much longer when reading data in random order than when reading in sequential order.