发明授权
- 专利标题： System and method for generating an optimized set of relational queries for fetching data from a relational database management system in response to object queries received from an object oriented environment
- 专利标题（中）： 用于从关系数据库管理系统生成用于从对象定向环境接收的对象查询的关系查询优化集合的系统和方法
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申请号： US870581申请日： 1997-05-21
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公开(公告)号： US5765159A公开(公告)日： 1998-06-09
- 发明人: Venkatachary Srinivasan
- 申请人： Venkatachary Srinivasan
- 申请人地址： NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： NY Armonk
- 主分类号： G06F17/30
- IPC分类号： G06F17/30
摘要：
The processing of object-oriented queries so as to retrieve data from a relational database management system (RDBMS) is described. An object-oriented query and at least one prefetch path are received from an object-oriented source (such as an application or user) . The prefetch path identifies one or more objects which are desired to be constructed. The object-oriented query is translated to a translated object query, where the translated object query is a relational database query capable of retrieving from the RDBMS data to initialize base attributes of top-level objects identified by the object-oriented query. A set of relational queries is generated from the translated object query and the prefetch path. These relational queries, which are capable of retrieving from the RDBMS data needed to construct the objects identified by the prefetch path, are processed by the RDBMS.