PQL: a declarative query language over dynamic biological schemata

PQL: a declarative query language over dynamic biological schemata
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发表时间:
2002
期刊:
Proceedings. AMIA Symposium
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通讯作者:
P. Mork;Ron Shaker;A. Halevy;P. Tarczy-Hornoch
P. Mork;Ron Shaker;A. Halevy;P. Tarczy-Hornoch
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其他
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作者:
P. Mork;Ron Shaker;A. Halevy;P. Tarczy-Hornoch

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我们介绍了PQL查询语言(PQL)在GeneSeek基因数据集成项目中使用。PQL结合了半结构化数据查询语言的许多特性。为此,我们增加了表达元数据约束的能力,如预期的语义和数据库管理方法。这些约束指导潜在查询计划的动态生成。这允许单个查询保持相关性,即使在源模式和中介模式不断发展的情况下也是如此,这在数据集成中经常发生。
We introduce the PQL query language (PQL) used in the GeneSeek genetic data integration project. PQL incorporates many features of query languages for semi-structured data. To this we add the ability to express metadata constraints like intended semantics and database curation approach. These constraints guide the dynamic generation of potential query plans. This allows a single query to remain relevant even in the presence of source and mediated schemas that are continually evolving, as is often the case in data integration.