Why aren't in memory databases commonly used?
为什么不在内存数据库常用的？
The virtual database coordinates the execution of the queries on the physical databases and post-processes the results of the individual query in memory to prepare a consolidated result.
此虚拟数据库会协调这些查询在物理数据库上的执行，并会在内存内置后处理各个查询的结果用以准备一个合并结果。
He adds that "the fastest databases have direct access to a piece of information, in memory, if possible."
他还补充道：“最快的数据库能够尽可能直接从内存中访问信息块。”
IBM claimed that servers will have access to six times more memory than otherwise found in servers, which could help boost the performance of applications like databases.
根据IBM的对外声明，在新型的架构中，服务器将会利用到比传统架构多出六倍的内存，这将使得应用程序程序得到像数据库那样的性能提升。
There are different types of storage; databases, file systems, in-memory data, persistence devices like native directories are but a few examples.
存储的类型有很多种；数据库、文件系统、内存数据和诸如原生目录等持久化设备都是存储。
Partitioning across multiple databases wouldn’t be a big deal if it were not for the fact that cross-database queries are not supported, forcing any unions or joins to be done in memory.
由于跨数据库查询不被支持，所以跨多个数据库的分区是个棘手的问题，任何union或join操作都需要在内存中完成。
For example, on distributed platforms, map-reduce coupled with in-memory databases; on System Z, co-deploy for access to enterprise data.
例如，在分布式平台中，使用映射-规约模式加上内存数据库；在System Z中，进行联合部署以实现对企业数据的访问。
This is primarily due to the fact that a DB2 instance can contain multiple databases. There are three main memory structures in DB2.
这主要是因为DB 2实例可以包含多个数据库。
Maximizing memory usage is one of the most important aspects in achieving optimal performance for any computing resource, let alone databases.
最大化内存使用率对于任何计算资源来说都是获得最优性能的一个最重要的方面，更不用说数据库了。
As the name implies, an in-memory database resides entirely in main memory rather than on disk, making data access an order of magnitude faster than with conventional, disk-based databases.
顾名思义，内存中数据库完全驻留在主存中，而不是磁盘上，这使得数据访问比传统的基于磁盘的数据块要快一个数量级。
An in-memory cache, allowing for performance improvements by avoiding reading databases for routing and validation.
使用内存缓存，通过避免阅读数据库来进行路由和验证提高了性能。
For example, instead of using the default in-memory cache engine, you can create custom providers that store cache data in databases, in custom objects, or in the file system.
例如，与其使用预设的记忆体中快取引擎，您可以建立将快取资料储存在资料库、自订物件或档案系统中的自订提供者。
Memory Card Databases syncing - Support for syncing databases stored in memory cards within HanDBase Conduit.
记忆卡数据库同步-支持同步数据库储存在记忆卡内handbase导线。
After all changes have been made in the course of functional testing, the translation memory and terminology databases have to be updated.
完成功能测试过程中所有的更改后，有必要更新翻译记忆库和术语库。
After all changes have been made in the course of functional testing, the translation memory and terminology databases have to be updated.
完成功能测试过程中所有的更改后，有必要更新翻译记忆库和术语库。
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