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:
Oct. 22, 2013
Filed:
Nov. 22, 2005
Ravi Murthy, Fremont, CA (US);
Sivasankaran Chandrasekar, Palo Alto, CA (US);
Eric Sedlar, San Francisco, CA (US);
Nipun Agarwal, Santa Clara, CA (US);
Ravi Murthy, Fremont, CA (US);
Sivasankaran Chandrasekar, Palo Alto, CA (US);
Eric Sedlar, San Francisco, CA (US);
Nipun Agarwal, Santa Clara, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A method and apparatus for efficiently maintaining XML index structures in a database system is provided. Instead of immediately synchronizing the XML index structures for every change submitted to the database, the changes are stored in a PENDING table. The XML index structures are periodically synchronized, based on certain criteria or at a user's discretion. Between synchronizations, the XML index structures may be in stale mode or current mode. If in stale mode, a request to access indexed information will use the XML index structures to find the desired indexed information without checking the PENDING table. If in current mode, a request to access indexed information will search the XML index structures and also check the PENDING table to determine 1) whether the indexed information has been updated or deleted, and 2) whether information relevant to the request has been inserted or updated.