extents
英 [ɪksˈtɛnts]
美 [ɪkˈstɛnts]
n. 程度; 限度; 大小; 面积; 范围
extent的复数
双语例句
- There are two problems with tables that have lots of extents, or at least there used to be.
那些有很多盘区、或者至少曾经有过的表，存在两个问题。 - To quantitatively determine urban land use extents and development densities, sub-pixel impervious surface areas were mapped for this area.
为了量化城市土地利用程度和开发密度，对研究区基于子像元的非渗透表面丰度进行了分类。 - However, the REPACK option does not necessarily reduce the number of extents.
然而，REPACK选项不一定减少盘区数量。 - If tables have too many extents, it is very likely that those extents are interleaved.
如果表拥有太多区段，那些区段就很可能是交错的。 - Although you can allocate additional extents, the blocks themselves are allocated separately.
尽管你可以进行额外的扩展，但是块本身是被隔开分派的。 - Modify the entry for LogPrimaryFiles to the required value to change the number of primary extents.
将LogPrimaryFiles条目修改为所需的值，以更改主扩展的数量。 - This feature checks the consistency and the corruption on data and extents, which is currently done through the oncheck utility.
这个特性检查数据和区段的一致性和损坏，当前这是通过oncheck实用程序完成的。 - The second problem, of course, is that a table or an index with many highly active extents will suffer from performance degradation due to increased disk head movement and increased contention for head positioning with other objects in the database.
当然，第二个问题是，有很多高度活跃的盘区的一个表或索引将遭遇性能降低，因为磁头移动的增加和磁头与数据库中其他对象的位置争用的增加。 - For maximum efficiency, frequently accessed tables should have as few extents as possible.
为达到效率最大化，频繁访问的表区段应当越少越好。 - Extents are a collection of eight physically contiguous pages and are used to efficiently manage the pages.
区是八个物理上连续的页的集合，用来有效地管理页。