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:
Mar. 30, 2010
Filed:
Jan. 18, 2006
Ronald Fagin, Los Gatos, CA (US);
Phokion Gerasimos Kolaitis, Los Altos, CA (US);
Lucian Popa, San Jose, CA (US);
Wang-chiew Tan, San Jose, CA (US);
Cong Yu, Ann Arbor, MI (US);
Ronald Fagin, Los Gatos, CA (US);
Phokion Gerasimos Kolaitis, Los Altos, CA (US);
Lucian Popa, San Jose, CA (US);
Wang-Chiew Tan, San Jose, CA (US);
Cong Yu, Ann Arbor, MI (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for generating a schema mapping. A provided mapping Mrelates schema Sto schema S. A provided mapping Mrelates schema Sto schema S. A mapping Mis generated from schema Sto schema Sas a composition of mappings Mand M. Mappings M, M, and Mare each expressed in terms of at least one second-order nested tuple-generating dependency (SO nested tgd). Mapping Mdoes not expressly recite any element of schema S. At least one schema of the schemas Sand Smay comprise at least one complex type expression nested inside another complex type expression. Mapping Mmay define the composition of the mappings Mand Mwith respect to a relationship semantics or a transformation semantics.