Inventor

LEI CHON HEI

US25 patents

⚠️ This page may combine multiple inventors who share the name “LEI CHON HEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEI CHON HEI

ORACLE INT CORP

Method and apparatus for encrypting and decrypting data in a database table

Database fine-grained access control

Method and apparatus for expiring encrypted data

Method and system for management of access information

Caching the results of security policy functions

Dynamic generation of optimizer hints

Enforcing data privacy aggregations

Selectively auditing accesses to rows within a relational database at a database server

Method and system for implementing an extensible audit trail

Column masking of tables

Database fine-grained access control

Method and apparatus for managing cryptographic keys

Method and mechanism for implementing synonym-based access control

Pluggable session context

Method and apparatus for authorizing a database operation

ORACLE CORP

Partitioned access control to a database

Database fine-grained access control

Virtually partitioning user data in a database system

Method and apparatus for facilitating compartmentalized database user management

LEI CHON HEI

Query optimization on VPD protected columns

Query optimization on VPD protected columns

Method and apparatus for encrypting database columns

BYUN JI WON

Method and apparatus for securing a database configuration

NARASINGHANALLUR JANAKI

Pluggable session context

RAFIQ MOHAMMED IRFAN

Method and system for optimizing row level security in database systems