ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,443,579, issued on Oct. 14, was assigned to Amazon Technologies Inc. (Seattle).
"Secure query processing" was invented by Andrei Paduroiu (Bellevue, Wash.) and Yaron Burd (Bellevue, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A distributed database keeps an abstract syntax tree (AST) and an included user code from interacting with a query engine coordinator during the performance of query execution processes. The query engine coordinator is separated into a frontend and backend, where a compiler on the frontend generates an AST and serializes it to be sent to the backend. The backend is implemented in a security environment separate from the fr...