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:
Sep. 21, 1999
Filed:
Oct. 30, 1996
Larry Stevens, Los Altos, CA (US);
Wei Huang, Foster City, CA (US);
Alexander C Ho, Belmont, CA (US);
Jonathan D Klein, Pleasanton, CA (US);
Dinesh Das, Redwood City, CA (US);
Boris Klots, Palo Alto, CA (US);
Oracle Corporation, Redwood Shores, CA (US);
Abstract
A method and apparatus for inserting sorted data into an indexed table is provided. Two or more nodes are used to insert the data into the indexed table. Before an entry for each inserted row is stored in the index associated with the table, the key values in the index entry are transformed using an operation that affects the order of the key values. For example, the order of the bytes used to represent the key values in the index entry may be reversed. The index entries are stored in the portion of the index that corresponds to the transformed key values. As a result, the entries for consecutive key values will not necessarily be stored in the same portion of the index. Consequently, the nodes will not have to compete for a 'hot' portion of an index if the nodes are inserting data with key values that fall into the same approximate range. The inverse of the transformation operation is performed on the transformed key values read from the index before the key values are supplied to the user.