ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,898, issued on Oct. 28, was assigned to GRAVIC INC. (Malvern, Pa.).

"Methods for preventing constraint violations at a target database by a database replication system where an application call, or a programmatic call by a database management system, forces a flush of a change log" was invented by Paul J. Holenstein (Downingtown, Pa.), John R. Hoffmann (Kennett Square, Pa.), Bruce D. Holenstein (Media, Pa.) and Wilbur H. Highleyman (Blairstown, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods are provided for preventing constraint violations at a target database by a database replication system. The database replication system replicates ...