Sql-Umschreibungsschichterkennung für Differentielle Privatsphäre

Details

Veröffentlichungs-Nr.

EP4811200

Anmeldetag

16. März 2026

Veröffentlichung

23. September 2026

Rechtsraum

EP

IPC

G06F21/62, G06F16/2453

Abstract

The present disclosure involves methods (200), apparatus, and systems (100, 700) for selection operations to perform a differential privacy (DP) rewrite. This can include: identifying (202) a SQL query; identifying (204) one or more source tables against which the SQL query will be processed and a classification of each source table; generating (206) a parse tree based on the SQL query, the parse tree comprising the one or more source tables, an output table, and at least one operation; searching (210) the parse tree for operations to re-write by: selecting a current branch to search; performing, as an analyzed operation, an analysis of each operation in the current branch starting at the output table and for each operation: determining (212) whether the analyzed operation is an aggregation process that transforms a user-level detailed table (ULDT) into an aggregate table.

Anmelder

Firma

Beijing Zitiao Network Technology Co., Ltd.

Land

🇨🇳 China

Fachgebiete