Apparatus and Method for Utilizing Context to Resolve Ambiguous Queries
First Claim
Patent Images
1. A computer readable storage medium, comprising executable instructions to:
- derive from a database schema an irreducible ambiguous group comprising a sub-schema with a set of vertices wherein any two vertices are part of a loop;
designate joins in the sub-schema as mandatory joins, excluded joins and neutral joins; and
define a context as a list of selected joins in the sub-schema.
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Abstract
A computer readable storage medium includes executable instructions to derive from a database schema an irreducible ambiguous group comprising a sub-schema with a set of vertices wherein any two vertices are part of a loop. Contexts are defined on the sub-schema. For each context, joins in the sub-schema are designated as mandatory joins, excluded joins and neutral joins. A selection of a context from multiple contexts invoked by a path characterizing a query is processed. The query is resolved using the context.
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Citations
23 Claims
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1. A computer readable storage medium, comprising executable instructions to:
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derive from a database schema an irreducible ambiguous group comprising a sub-schema with a set of vertices wherein any two vertices are part of a loop; designate joins in the sub-schema as mandatory joins, excluded joins and neutral joins; and define a context as a list of selected joins in the sub-schema. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A computer readable storage medium, comprising executable instructions to:
derive from a database schema a context defined by mandatory joins, excluded joins and neutral joins. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
Specification