优化程序采用系统目录，说明那里有多少行，以及构造了较好的索引来计算所采用的查询路径。
The optimizer uses system catalogs indicating how many rows there are and how well the indexes are formed to figure out what query path to use.
简短地放，一个文件系统是清楚定义的方法计算机的作业系统对商店、目录和取回文件使用。
Briefly put, a file system is a clearly-defined method that the computer's operating system USES to store, catalog, and retrieve files.
文件系统是一种用来存储和组织计算机文件、目录及其包含的数据的方法，它使文件、目录以及数据的查找和访问得到简化。
A filesystem is a method for storing and organizing computer files and directories and the data they contain, making it easy to find and access them.
这类方法延续到了20世纪，只不过已经演变为图书馆馆员在书目资料输入计算机系统里之前用来记录书名、著者、主题等等项目的目录卡。
The idea survived into the 20th century in the shape of the little catalogue cards librarians used to note down a book’s title, author, subject and so on before the records were moved onto computers.
这些节点是为轻量级的任务所用的，像自定义计算，文件系统的移动、创建目录、删除等等。
These nodes are meant for lightweight tasks like custom calculations, FileSystem move, mkdir, delete.
使用sshfs将一个目录作为本地计算机上的文件系统安全地挂载到一个远程服务器。
Securely mounting a directory on a remote server as a file system on a local computer using SSHFS.
当你删除存储在计算机上的文件时，这些数据并没有真正移除，它们的信息被保存在操作系统可以查询到的目录中。
When it comes to data stored on your computer, deleting files doesn't actually remove the data.
工作目录是指在计算机操作系统中，在目录树内用参考点的一种目录。
Working directory is a directory used as a reference point within a directory tree in a computer operating system.
目录直读图片管理系统的最大特点就是只有一个单文件，没有数据库，这样就巧妙的解决了非计算机专业电脑爱好者所头疼的问题。
The major feature of NEATPIC is that there is only a single document and no database, which has ingeniously solved the problem that gives non-computer specialized lovers headaches.
文件系统是操作系统最基本的资源，它是一个计算机系统内文件和目录的集合。
File system is basic resource for an operating system, it's an aggregate of the computer files and catalogues.
进入选择目录窗口后，您可以于系统和其它网络上的计算机浏览不同的目录。
You will now be in the Select directory window in which you can browse to the different directory on your system and other PCs on the network.
许多ANSI标准在国际上通用，很多个人计算机在操作系统目录中有ANSI。
Many ANSI standards are observed worldwide, and many personal computers have in their operating system directory an ANSI.
许多ANSI标准在国际上通用，很多个人计算机在操作系统目录中有ANSI。
Many ANSI standards are observed worldwide, and many personal computers have in their operating system directory an ANSI.
应用推荐