图3说明了给定分区的数据库对象之间的关系。
Figure 3. DB2 object-relationship diagram for a given database partition.
收集所有分区的数据可能没有意义，尤其是在分区数量很大的情况下。
It just doesn't make sense to collect data on all partitions, especially if you have many of them.
Slice将OpenJPA扩展用于一个分布式的、水平分区的数据库环境。
Slice extends OpenJPA for a distributed, horizontally partitioned database environment.
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