The API itself, defined in the javax. persistence package the Java Persistence Query Language(JPQL) object/relational metadata.
它的优点是元数据操作几乎跟非同步一样快(也就是比需要两次元数据写操作的logging更快)。
The advantage is that meta-data operations are nearly as fast as asynchronous updates(i.e. faster than with logging, which has to write the meta-data twice).
一个OSGibundle只是一个添加了额外元数据的jar文件。
An OSGi bundle is simply a Jar file that has had extra meta data added to it.
这一内部的数据结构(确切地说就是“关于数据的数据”)被称为元数据。
This internal data structure(literally,"the data about the data") is called meta-data.
整个文件系统被加密(例如,文件名,文件夹名,每个文件的内容,空闲空间,元数据等)。
Entire file system is encrypted(e.g., file names, folder names, contents of every file, free space, meta data, etc).
除了这些调查中,电话定期记录他们的地理位置,并保持呼叫和文本元数据的加密记录。
In addition to these survey questions, the phones recorded their geographic location at regular intervals and kept encrypted records of call and text meta-data.
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