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Translation-of-object-queries-involving-inheritence

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Translation of object queries involving inheritence

Details

Inventors: Anonsen, Steven P.; Trappen, Anthony R.; Thalman, Matthew Aaron;
Assignee: Microsoft Corporation (Redmond, WA)
Primary Examiner: Alam; Shahid
Assistant Examiner: Fleurantin; Jean Bolte
Attorney, Agent or Firm: Westman, Champlin & Kelly, P.A.

Join expressions, expressed in terms of objects, are translated into a relational database join statement by generating a parse tree based on the join expression. The parse tree is traversed to build the relational database join statement.

DETAILED DESCRIPTION Join expressions, expressed in terms of objects, are translated into a relational database join statement by generating a parse tree based on the join expression.
The parse tree is traversed to build the relational database join statement.
The parse tree can be traversed by first building a directed, acyclic graph (DAG) from the parse tree.
The DAG is then traversed to obtain the relational database join statement.

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