Chapter 2, Data Blocks, Extents, and Segments.
第2章，数据块，数据扩展，及数据段。
Data blocks Pages Smallest storage entity in the storage model.
数据块页面存储模型中的最小存储实体。
Pages are defined as fixed length data blocks and held in virtual memory.
页面定义为固定长度的数据块，并且保存在虚拟内存中。
Oracle Database data is stored in data blocks of the size specified.
一个数据块一般是磁盘上一定数量的物理字节数的和。
This time interval will be coerced to an integer number of data blocks.
这个间隔必须是一个数据类型的整数。
Mouse over the year headings and the data blocks to view additional details.
将鼠标移到年份标题上，你就可以看到额外详细的数据单元。 （由于有些图表是内嵌式的，暂时不会弄，请大家见谅。
For the first Sunday, a base level 0 backup is taken, all data blocks are copied.
对于第一个星期天，采用基本级别0备份来复制所有数据块。
Buffer Cache - Memory allocated for storing data blocks read from physical data files.
缓冲区缓存——为存储从物理数据文件读取的数据块而分配的内存。
One way to clear working memory is to delete data blocks that are no longer needed.
清除工作记忆的一种方法就是删除那些已经没用的数据块。
Buffer Cache Memory allocated for storing data blocks read from physical data files.
缓冲区缓存为存储从物理数据文件读取的数据块而分配的内存。
A 512 byte area of disk storage. Each disk sector contains two 256 byte disk data blocks.
一个512字节的磁盘存储区，每个磁盘扇区含有两个256字节的磁盘数据块。
When a transaction is applied to the filesystem proper, the data blocks are written to disk first.
当事务应用于适当的文件系统时，数据块首先被写到磁盘。
S. federal standard in 1977. The standard form USES a 56 bit key to encrypt 64 bit data blocks.
1977年，该方案成为美国联邦标准，该标准形式采用一个56位的钥匙对64位的数据块进行加密。
Signaling information for the users is mapped to data blocks to be sent at different data rates.
给各用户的信令信息被映射到要以不同数据率发送的数据块。
If data blocks aren't in memory, the server process fetches them from the data files and loads them.
如果数据块不在内存中，服务器进程会把它们从数据文件中读取并进行载入内存。
In contrast, XFS ensures that any unwritten data blocks are zeroed on reboot, when XFS journal is replayed.
相反，当XFS日志系统重新启动时，XFS确保任何未写入的数据块在重新引导时置零。
Synchronous transmission is used once to send a few bytes or data blocks a lot of information transmission.
同步传送用于一次发送几个字节或数据块的大量的信息传送。
A system and method accurately clocks write data to the discrete data blocks in a patterned media disk drive.
本发明的系统和方法精确地计时将数据写入模式化介质盘驱动器中的分立数据块中。
The Global Cache Service (GCS) of that Oracle rac node is responsible for managing access to these sets of data blocks.
该Oraclerac节点的全局缓存服务(GCS)负责管理对这些数据块集的访问。
All nodes in an Oracle rac environment will be designated as the master of approximately the same number of data blocks.
在Oraclerac环境中，数据块大致相等的所有节点都将被指定为主节点。
CBC is a mode of cryptographic operation in which the plain text data is divided into chunks of equally sized data blocks.
CBC是一种加密操作模式，其中纯文本数据分为同样大小的数据块。
When you update data, mechanisms for analyzing the statement and uploading data blocks into memory are the same ones.
当您更新数据时，在内存中存在的分析和更新数块的机制是同一个。
Another idea is to use temp altitudes in data blocks on aircraft to remind you that an altitude change needs to be made.
数据模块中使用临时高度以提醒你需要改变航空器的高度。
Readers of data may have to wait for writers of the same data blocks in some very special cases of pending distributed transactions.
在有些非常特殊的场合下（挂起的分布式事务）读取数据需要等待改写数据产生的锁的释放。
To do this, the filing system must first allocate a sufficient number of data blocks on the disk and then write the data to those blocks.
要做到这个，文件归档系统首先必须在硬盘上分配一个足够大小的数据块，然后再把数据写入到那些数据块中。
On startup, the NameNode enters a special state called Safemode. Replication of data blocks does not occur when the NameNode is in the Safemode state.
SafeModeNamenode启动后会进入一个称为SafeMode的特殊状态，处在这个状态的Namenode是不会进行数据块的复制的。
Through alternately storing successive triggering datas in two data blocks, it can achieve about-trigger wave recording for successive triggering.
用两个数据块交替存放连续触发的数据，实现了对连续触发的全触发录波；
Ext2fs implements fast symbolic links: no data blocks need to be allocated for this purpose, and the target name is directly stored in the inode table.
Ext2fs了实现快速符号链接：不需要为此目的而分配数据块，并且将目标名称直接存储在索引节点(inode)表中。
All the Oracle rac nodes will be the master of identical number of data blocks, if the number of rac nodes is a divisor of the number of Oracle data blocks.
如果Oraclerac节点数是Oracle数据块数的约数，则所有rac节点都是具有同样数量的数据块的主节点。
All the Oracle rac nodes will be the master of identical number of data blocks, if the number of rac nodes is a divisor of the number of Oracle data blocks.
如果Oraclerac节点数是Oracle数据块数的约数，则所有rac节点都是具有同样数量的数据块的主节点。
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