ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,909, issued on March 25, was assigned to Amazon Technologies Inc. (Seattle).

"Generating a multi-column index for relational databases by interleaving data bits for selectivity" was invented by Anurag Windlass Gupta (Atherton, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-column index is generated based on an interleaving of data bits for selectivity for efficient processing of data in a relational database system. Two or more columns may be identified for inclusion in the multi-column index for a relational database table. Based, at least in part, on the interleaving of data bits for selectivity from the identified columns, a multi...