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. 14, 2014
Filed:
Jun. 03, 2008
Jian Le, San Mateo, CA (US);
Jian Le, San Mateo, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Methods and apparatus, including computer program products, implementing and using techniques for analyzing historical data in a data warehouse. A data warehouse is provided. The data warehouse includes several database tables. Every database table has a start time column and an end time column. A query is issued to the data warehouse. The query includes customized query predicates against the start time column values and end time column values of a database table. A response is received from the data warehouse. The response includes table records satisfying the query and having valid (START_TIME, END_TIME) ranges that cover a fixed time point specified by the customized query predicates of the query. Methods for updating a database table in a data warehouse, and a data warehouse system are also described.