The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2009
Filed:
Feb. 16, 2006
Franz-x. Faerber, Walldorf, DE;
Wolfgang Stephan, Heidelberg, DE;
Christian M. Bartholomae, Oftersheim, DE;
Guenter Radestock, Karlsruhe, DE;
Franz-X. Faerber, Walldorf, DE;
Wolfgang Stephan, Heidelberg, DE;
Christian M. Bartholomae, Oftersheim, DE;
Guenter Radestock, Karlsruhe, DE;
SAP AG, Walldorf, DE;
Abstract
A method is disclosed for modeling application-level objects in terms of join graphs defined over tables containing structured data residing in a relational database. In accordance with the disclosed metamodel, each object is modeled logically as a join graph. A query received from an application that requests the return of objects meeting certain conditions is reformulated to refer to the metamodel. The metamodel includes an index structure having a plurality of indexes and a set of join conditions that specify relationships between the indexes. Some series of join conditions form join paths, such that each join path originates on an anchor table and ends on a table corresponding to one of the plurality of indexes. The metamodel further includes at least one view representing a subgraph of the join graph having at least one anchor table as a key.