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:
Jan. 31, 2023
Filed:
Oct. 23, 2020
Teradata Us, Inc, San Diego, CA (US);
Jaiprakash G Chimanchode, Hyderabad, IN;
Bhashyam Ramesh, Secunderabad, IN;
Stephen A Brobst, Las Vegas, NV (US);
Pratik Patodi, Raipur, IN;
Dhrubajyoti Roy, Kolkata, IN;
Sai Pavan Kumar Pakala, Hyderabad, IN;
Teradata US, Inc., San Diego, CA (US);
Abstract
A database system receives a query and determines that the query includes an inner join between a parent table and a child table. The database system determines that the following relationships exists between the parent table and the child table: referential integrity ('RI') between a primary key attribute (pk) in the parent table and a foreign key attribute (fk) in the child table and a temporal relationship constraint ('TRC') between a period attribute in the parent table and a TRC-attribute in the child table. The database system determines that the query satisfies non-temporal join elimination conditions and temporal join elimination conditions and that the query contains no other qualification conditions on the parent table's period attribute and eliminates the inner join when planning execution of the query.