在分布式数据库系统中，由于数据的分布和冗余，查询处理变得更为复杂。

For the distributed database systems, query processing becomes more difficult because of distribution and redundance of data.

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在分布式数据库系统中，由于数据的分布和冗余，查询处理变得更为复杂。

For the distributed database systems, query processing becomes more difficult because of distribution and redundance of data.

youdao