Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496819 | Rewriting a query in terms of a summary based on functional dependencies and join backs, and based on join derivability | James L. Finnerty, Mohamed Ziauddin, Andrew Witkowski | 2002-12-17 |
| 6477525 | Rewriting a query in terms of a summary based on one-to-one and one-to-many losslessness of joins | James L. Finnerty, Mohamed Ziauddin, Andrew Witkowski | 2002-11-05 |
| 6345272 | Rewriting queries to access materialized views that group along an ordered dimension | Andrew Witkowski, Mohamed Ziauddin | 2002-02-05 |
| 6341281 | Database system with methods for optimizing performance of correlated subqueries by reusing invariant results of operator tree | Roger MacNicol, Steven A. Kirk, Jun Rao, Katherine Tsouya Yang | 2002-01-22 |