Therefore, XGrind cannot perform any join, aggregation, nested queries, or construct operations.
因此，XGrind不能执行任何连接、聚合、嵌套查询或构建操作。
Input data sets go through some operation (filtering, aggregation, or a join) in the early stages of the WebSphere DataStage job that reduces their size.
在WebSphereDataStage作业的早期阶段中，输入数据要经过一些操作的处理(过滤、聚合或连接)，这些操作会缩小数据的规模。
Provides a join point for multiple input messages that enables message aggregation.
提供多个输入消息的联接点，该联接点支持消息聚合。
Drug discovery needs not only a great number of computing resources but also an environment for information exchange and aggregation, so that experts of all aspects can join during the process.
讨论了网格技术在药物研发领域的应用，药物研发不仅需要大量的计算资源，还需要一个信息交互集成的环境，使得研发过程各个方面的人员都能参与进来。
Drug discovery needs not only a great number of computing resources but also an environment for information exchange and aggregation, so that experts of all aspects can join during the process.
讨论了网格技术在药物研发领域的应用，药物研发不仅需要大量的计算资源，还需要一个信息交互集成的环境，使得研发过程各个方面的人员都能参与进来。
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