ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,493,592, issued on Dec. 9, was assigned to Beijing OceanBase Technology Co. Ltd. (Beijing).

"Constraint relationship check methods and apparatuses for database" was invented by Zhenkun Yang (Beijing), Fusheng Han (Beijing), Yuchen Wei (Beijing) and Fanyu Kong (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A computer-implemented method for a database constraint relationship check, includes performing a data manipulation language (DML) operation of a first transaction for a target data table in the database. A submission stage is entered. A corresponding current transaction version number is determined for a target data record obtained and each la...