Metadata Version Management for DW 2, 0 Environment
Metadata Version Management for DW 2, 0 Environment
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DOI：
10.4156/jcit.vol5.issue3.8
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
Ding Pan
中科院分区：
文献类型：
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作者：
Ding Pan
DW 2.0作为当今决策支持界所要求的数据仓库的新范式，它对数据生命周期的认识，使得元数据演化机制成为重要的研究课题之一。描述了在DW 2.0环境下对四个数据扇区进行多版本管理的需求。提出了一种新的元数据版本控制元模型，该模型能够存储和管理模式版本，比较和解释版本查询的结果，并跟踪版本演化。在实现中，模型管理算子抽象地讨论了模式随版本的演化，并给出了一个验证引擎来解决演化不一致性。原型系统验证了其可行性和有效性。
As a new paradigm for data warehousing demanded by today’s decision support community, DW 2.0 recognized the life cycle of data with it, that make metadata evolution mechanism became one of the important research issues. The requirements of multi-version management for four data sectors in DW 2.0 environment are described. Then a novel metadata versioning meta-model is proposed, that is capable of storing and managing schemas versions, comparing and interpreting the results of versions queries, and tracing the version evolution. In implementation, the schema evolution with version is discussed in the abstract by model management operators; a verification engine to resolve the evolution inconsistencies is represented. The prototype has verified its feasibility and validity.