可以动态添加新的SDS服务器，以分担查询工作负载和扩展可用性选项。
New SDS servers can be added dynamically to share query workload and expand availability options.
优化器使用表大小、索引可用性以及数据分布等信息来确定响应该查询的最佳路径。
The optimizer USES information such as table sizes, availability of indexes, and data distribution to figure out the optimal way to answer the query.
LotusExpeditor还提供了网络感知api，使得应用程序能够查询物理的网络连接以及特定远程资源的可用性。
Lotus Expeditor also provides network awareness APIs enabling applications to query physical network connectivity as well as the availability of specific remote resources.
因此，数据源的不可用性将不会妨碍查询的执行。
Thus unavailability of data source will not obstruct execution of queries.
SQLFire提供了一个JDBC与ADO.NET接口，用于以纯s QL的方式查询数据库，但键与索引却是存放在内存中以提供高可伸缩性、可用性及更棒的性能。
NET interface for querying the datastore in a pure SQL manner, but the keys and indexes are stored in memory to provide high scalability, availability and better performance.
在移动主机中对查询数据进行语义缓存，将提高移动主机对服务器资源的利用效率以及可用性。
The resource of servers always is visited by mobile computer. Therefore, the efficiency and availability will be improved when querying data from semantic cache in mobile computer.
从支持面向对象、可表达能力、支持集合和可用性等四个方面来说明一个查询语言。
This paper illustrates a query language by four fields:support of object-oriented, expressive power, support of collections, and usability.
从支持面向对象、可表达能力、支持集合和可用性等四个方面来说明一个查询语言。
This paper illustrates a query language by four fields:support of object-oriented, expressive power, support of collections, and usability.
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