为键控物理或逻辑文件创建索引。
了解逻辑文件系统和虚拟文件系统。
Understanding the logical file system and the virtual file system.
可以为DDS创建的连接逻辑文件创建多个索引。
Multiple indexes may be created for a DDS-created join logical file.
如果只对逻辑文件进行恢复，需要使用- l选项。
To restore only the logical files, the -l option can be used.
然而，可以对这些逻辑文件进行备份以用于日后恢复。
However, you can backup these logical log files for restore purposes.
逻辑文件系统接口支持UNIX类型的文件访问语义。
The logical file system interface supports UNIX-type file access semantics.
要省略从备份中恢复的逻辑文件，需要使用- p选项。
To omit logical files being restored from the backup, the -p option needs to be used.
按照查询优化器建议的键创建逻辑文件能够执行得更快。
Can perform faster with the creation of a keyed logical file containing the keys suggested by the query optimizer?
可以将逻辑文件备份到LTAPEDEV配置参数中说明的路径。
The logical files can be backed up to the path mentioned in the LTAPEDEV configuration parameter.
要在激活引擎中注册所有的激活脚本，首先需要创建一个激活逻辑文件。
To register all the activation scripts with the activation engine, first create an activation logic file.
CHGLFM将把与连接逻辑文件有关的所有二级索引移入或移出ssd。
CHGLFM will move all the secondary indexes associated with a join logical file on or off of SSDs.
您有一个连接逻辑文件，但是只希望在SSD中保存键的索引，而不是二级索引。
You have a join logical file, but only want the index for the key on SSD, not the secondary indexes.
逻辑文件系统还负责管理内核的打开文件表和每个进程的文件描述符信息。
The logical file system is also responsible for managing the kernel's open file table and the per process file descriptor information.
CHGPFM或CHGLFM命令将把与键控或逻辑文件有关的索引移入或移出ssd。
A CHGPFM or CHGLFM command will move the index associated with a keyed or logical file either on or off of SSD. For example.
逻辑文件系统层是一个抽象层，用户可以通过它请求各种文件操作，如读、写、获得相关信息，等等。
The logical file system layer is the level of abstraction at which users can request the various file operations, such as read, write, stat, and so on.
现在，您可以对新的逻辑文件或sql索引发出CHGLFM命令，将索引移入或移出ssd，而数据保持不动。
Then you can issue CHGLFM against the new logical file or SQL index to move the index on or off of SSD and the data will not be moved.
虚拟文件系统可以为物理文件系统、网络文件系统、或者逻辑文件系统(没有物理后备存储，如ramfs)。
A virtual file system can be a physical file system, a network file system, or a logical file system (one that does not have a physical backing store, such as ramfs).
指定逻辑文件名称EMPKSDS1，即您的系统设置的CICS小组名称，并使用DSName作为第一节中创建的数据集名称。
Specify the logical file name EMPKSDS1, the CICS group name for your system setup, and the DSName as the dataset name that you created in Section 1.
在数据格网中，根据给定逻辑文件标识给出一个或多个包含该文件内容物理位置的问题称为数据格网中的复制定位问题。
Data Grid Replica Location is coined to denote that get one or more physical positions by Logical File Name in Data Grid.
虚拟文件系统建立了不同的基础物理文件系统到逻辑文件系统之间的桥梁，为操作系统中的其他部分提供了一致的目录树层次结构。
The virtual file system bridges the underlying disparate physical file system to the logical file system, providing a consistent directory tree hierarchy to the rest of the operating system.
CognosController8客户端使用Windows配置文件位置存储个人设置、缓存文件和一些. NET技术业务逻辑文件。
The Cognos Controller 8 client USES the Windows profile location for storing personal Settings, cache files and some.net technology business logic files.
在这种情况下，返回R PG的行取决于创建键逻辑文件时使用的是哪个用于处理DDS关键字的重复键(LIFO(默认值)、FIFO或LCFO)。
In this case the row returned to RPG is dependent on which of the duplicate key handling DDS keywords (LIFO (default), FIFO or LCFO) were used when creating the keyed logical file.
在这种情况下，返回R PG的行取决于创建键逻辑文件时使用的是哪个用于处理DDS关键字的重复键(LIFO(默认值)、FIFO或LCFO)。
In this case the row returned to RPG is dependent on which of the duplicate key handling DDS keywords (LIFO (default), FIFO or LCFO) were used when creating the keyed logical file.
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