The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2019
Filed:
Aug. 18, 2016
International Business Machines Corporation, Armonk, NY (US);
Yao-Ching S. Chen, Saratogo, CA (US);
Xiaohong Fu, Milpitas, CA (US);
Maryela E. Weihrauch, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In an enforcement of temporal referential integrity in a database system, the database system receives a change request for one or more rows in a target table in the database system. The system determines that the target table has temporal referential constraints with a second table. The system compares a non-period child key value in child table row(s) with a non-period parent key value in parent table row(s) and compares a child business time period key value in the child table row(s) with a parent business time period key value in the parent table row(s). When the non-period child key value matches the non-period parent key value and when the child business time period key value is within the parent business time period key value, the system determines that the change request satisfies the temporal referential constraints. Otherwise, the system determines that the change request violates the temporal referential constraints.