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:
Nov. 20, 2012
Filed:
Dec. 24, 2008
Ken Takeuchi, Tokyo, JP;
Yuji Takeuchi, Tokyo, JP;
Takahiro Yodo, Tokyo, JP;
Rsun Corporation, Tokyo, JP;
Abstract
Provided is a technique for a data-driven database which frees a user from having to be conscious of a sequence in which instructions of a program for accessing a database are described, an interrelation of data items, and the like, and from having to describe redundant instructions. A data-driven database processor includes: schema definition storage meansfor storing a schema definition of a database; derived definition storage meansfor storing a derived definition describing a cause-and-effect relationship that exists when a value of a given data item is derived from a value of another data item; derived definition processing meansfor generating a trigger programthat makes a chain of changes to values of data items based on the cause-and-effect relationship described in the derived definition; and a database management systemfor executing the trigger programwhen a change is made to the other data item that affects the value of the given data item.