本体可以很好地解决异质数据源的语义异构问题。
Ontology plays an important role in solving the problem of semantic heterogeneity of heterogeneous data sources.
把来自异质数据源的适当视图转变为非结构数据是非常复杂的。
Getting the right view into unstructured data from heterogeneous sources can be quite tricky.
黄土高原数据仓库系统以分布式数据仓库为核心，包含多个异质数据源。
The Loess Plateau data warehouse system is a distributed data warehouse including several heterogeneous da-ta sources.
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