Location History:
- Los Altos, CA (US) (2001)
- Los Altos Hills, CA (US) (1998 - 2006)
Company Filing History:
2 out of 2,019 
1 out of 3 
1 out of 322 
Years Active: 1998-2006
Title: The Innovative Mind of Harry Anthony Leslie
Introduction
Harry Anthony Leslie, an accomplished inventor based in Los Altos Hills, CA, holds an impressive portfolio of five patents. His innovative contributions primarily focus on optimizing database management systems, showcasing his expertise in the field of technology.
Latest Patents
Among his latest patents are two notable inventions:
1. **Method and System for Rowcount Estimation with Multi-Column Statistics and Histograms**
This invention provides methods for optimizing a database management system's processing of queries. It involves collecting a plurality of single column statistics to estimate row counts and unique entry counts for a single column operator. By selecting a preferred single column statistic based on predetermined criteria, the system efficiently determines selectivity estimates for predicates in a query, ultimately aiding in optimizing the processing of these queries.
2. **Database Query Cost Model Optimizer**
This invention discloses methods and apparatus for accurately estimating the cost of a database query. It accounts for all resources used, including total computer resources and estimated elapsed time for the production of the first and last rows of an operator involved in the query. The invention particularly focuses on blocking operators, such as sorts and hash joins, ensuring accurate cost models that enhance query optimization.
Career Highlights
Harry Anthony Leslie's career includes significant contributions to companies such as Compaq Computer Corporation, where he honed his skills in database management and optimization. His expertise and innovative spirit have made a profound impact on the field.
Collaborations
Throughout his career, Harry has worked alongside talented professionals, including Christopher M. Farrar and Pedro Celis. These collaborations have undoubtedly enriched his projects and contributed to the successful development of his patents.
Conclusion
Harry Anthony Leslie continues to be a driving force in innovation within database management systems. His inventive solutions not only address current technological challenges but also pave the way for future advancements in the industry. With five patents to his name, Leslie's work is a testament to his dedication and ingenuity as an inventor.