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. 24, 2015
Filed:
Mar. 08, 2010
Artem A. Oks, Bellevue, WA (US);
Per-ake Larson, Redmond, WA (US);
Srikumar Rangarajan, Sammamish, WA (US);
Michael James Zwilling, Bellevue, WA (US);
Jose A. Blakeley, Redmond, WA (US);
Hanumantha R. Kodavalla, Sammamish, WA (US);
Artem A. Oks, Bellevue, WA (US);
Per-Ake Larson, Redmond, WA (US);
Srikumar Rangarajan, Sammamish, WA (US);
Michael James Zwilling, Bellevue, WA (US);
Jose A. Blakeley, Redmond, WA (US);
Hanumantha R. Kodavalla, Sammamish, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
Methods, systems, and computer-readable media of columnar storage of a database index are disclosed. A particular columnar index includes a column store that stores rows of the columnar index in a column-wise fashion and a delta store that stores rows of the columnar index in a row-wise fashion. The column store also includes an absence flag array. The absence flag array includes entries that indicate whether certain rows have been logically deleted from the column store.