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    • 2. 发明授权
    • Method and process of query optimization to a given environment via specific abstraction layer domain knowledge
    • 通过特定抽象层领域知识,给定环境查询优化的方法和过程
    • US08548985B2
    • 2013-10-01
    • US10977765
    • 2004-10-29
    • Richard D. DettingerTravis M. DruckerBrian R. MurasJeffrey W. Tenner
    • Richard D. DettingerTravis M. DruckerBrian R. MurasJeffrey W. Tenner
    • G06F17/30
    • G06F17/3056
    • Methods and apparatus for optimizing an abstract query are disclosed. Embodiments of the present invention allow an abstract database to optimize an abstract query composed from a set of logical fields. Each logical field includes a field name and an access method used to map the logical field to an underlying physical representation of the data. After a user composes an abstract query and submits it for execution, a runtime component and optimization component may be configured to resolve the abstract query to a physical query of the underlying physical data source using an access method associated with each logical field. In addition, as the runtime component builds a query consistent with the schema of the underlying database, an optimizing component may modify the query using any suitable optimization techniques. Different optimization techniques include optimizations based on logical field metadata, optimizations based on the underlying physical data repositories referenced by an access method and optimizations based on the relationships between logical fields or underlying data structures.
    • 公开了优化抽象查询的方法和装置。 本发明的实施例允许抽象数据库优化由一组逻辑字段组成的抽象查询。 每个逻辑字段包括字段名称和用于将逻辑字段映射到数据的底层物理表示的访问方法。 在用户组成抽象查询并将其提交以执行之后,可以将运行时组件和优化组件配置为使用与每个逻辑字段相关联的访问方法将抽象查询解析为底层物理数据源的物理查询。 此外,由于运行时组件构建与基础数据库的模式一致的查询,因此优化组件可以使用任何合适的优化技术来修改查询。 不同的优化技术包括基于逻辑字段元数据的优化,基于访问方法引用的底层物理数据存储库的优化和基于逻辑字段或底层数据结构之间的关系的优化。