索引块

词组短语

index block

与索引块相关的网络例句 [注：此内容来源于网络，仅供参考]

Each index block, which can lead to less I/O and better performance.

可以在索引块中存储跟过的索引键，减少I/O ，提高性能，节省空间

When an index block is read from a table into the key cache, it is placed at the end of the warm sublist.

当一个索引块被从表中读取到 Key Cache 中时，它被放在 warm 子链的尾部。

In an indexed file, the lowest level index block. It contains the relative block numbers and high keys of several data blocks.

索引文件中最低一级的索引块，其内容包括相对块号和几个数据块的高一级的关键字。

Compression is achieved by sharing the prefix entries among all the suffix entries in an index block.

这种共享使得每个索引块在提升性能的同时存储更多的键值，大量节省空间。

When operating an index block, it can not affect other index terms; hence it can online update the index information in any index block.

由于每一索引块只用于存储有关同一索引项的索引信息，所以在对一个索引块中进行操作时，不会影响其他索引项，于是可以对任何索引块中的索引信息进行在线更新。

If the clustering factor is roughly equal to BLOCKS minus FREE_BLOCKS from USER_TABLES then the chances are that a range scan will read one index block, and locate all of the data rows in needs in one or more adjacent blocks in the table.

若簇因子几乎与BLOCKS - FREE_BLOCKS（来自USER_TABLES）相近，一个区间扫描将可能读一个索引块，然后根据需要在一个或更多的临近块中定位所有数据行。

Prefix entries are available for sharing immediately after being written to the index block and remain available until the last deleted referencing suffix entry is cleaned out of the index block.

一个前缀被写入后立即就可以被此索引块内的后缀共享，直到所有引用此前缀的后缀都被删除为止。

Prefix entries are written to the index block only if the index block does not already contain a prefix entry whose value is equal to the present prefix entry.

应用键压缩后，生成索引时，如果一个键值的前缀在索引块中不存在，此前缀才会被写入索引块中。

If the application is multi-user then it means that every user will tend to write into the same index block and buffer busy waits will be the outcome as transactions 'queue' to write data to the hottest index block around.

若单用户执行应用程序，这不是什么问题。若应用是多用户的，则意味着每个用户将写入同一个索引块。

Contiguous allocation can suffer from external fragmentation.Direct access files cannot be supported with linked allocation.Indexed allocation may require substantial overhead for its index block.

邻接分配能承受外部碎片；直接访问文件不能为链接分配所支持；索引式分配又可能因其索引块而需要大量额外开销。

与索引块相关的网络解释 [注：此内容来源于网络，仅供参考]

Block Address：块地址

图2给出了Cache的地址划分情况,可分为块地址(Block Address)和块内偏移(Block offset). 块地址可以进一步分为标志字段(Tag)和索引字段(Index). 其中Tag的后两位SS用来做子分区的选择位. 访问Cache时,首先访问L1,当L1命中时就直接返回,

boot block：引导块

共享内存可用来作为进程间通信(IPC)的手段,多个进 程通过共享内存来交换信息. Linux支持SYSTEM V的共享内存IPC机制. 一个文件系统包括:引导块(boot block)、超级块(super block)、索引节点表(inode table)、数据块(data block)

document：文档

lucene索引由多个"索引块"(segment)组成,增量索引以新块形式出现,每个"索引块"由多个"文档"(document)组成,每个"文档"由多个"索引域"(field)组成,"分析器"对每个"索引域"进行分析,拆分成很多"索引项",最终构成了lucene的索引

primary index block：初级索引块

primary impedance starting 原边串联阻抗起动法 | primary index block 初级索引块 | primary inductance 初级线圈电感

second-level index block：二级索引块

second-level directory 二级目录,次级目录 | second-level index block 二级索引块 | second-level interrupt 二级中断

CIBCompressed Index Block：压缩的索引块

8CIBControl Interface Bus控制接口总线 | 10CIBCompressed Index Block压缩的索引块 | 11CIBCommand Input Buffer命令输入缓冲器

primary level index block：初级索引块

primary lesion 原发性损害,下疳,梅毒初疮 | primary level index block 初级索引块 | primary levelling 一等水准测量

SCIBSearch Compressed Index Block：路径检索简洁索引块

10SCIScience Citation Index科学引用文索引(美国) | 11SCIBSearch Compressed Index Block路径检索简洁索引块 | 12SCICSemiConductor Integrated Circuit 半导体集成电路

CIB Compressed Index Block：压缩的索引块

CIB Command Input Buffer 命令输入缓冲器 | CIB Compressed Index Block 压缩的索引块 | CIB Control Interface Bus 控制接口总线

massa intermedia：中间块[丘脑]

29、mass index 物质索引 | 30、massa intermedia 中间块[丘脑] | 31、Match Institute 匹配研究所,火柴研究所