Cheng-Fong Shih

Title: **Innovative Solutions by Cheng-Fong Shih: Pioneering Database Recovery Techniques**

Introduction

Cheng-Fong Shih, based in Austin, TX, is a notable inventor recognized for his contributions to database systems and transaction management. With two patents to his name, Shih has developed groundbreaking solutions that address critical challenges in data integrity and recovery.

Latest Patents

One of Shih's significant patents is a **Soft checkpointing system using log sequence numbers derived from stored functions MINBUFLSN and LOWTRANLSN**. This innovation introduces a method for efficiently managing checkpoints in a computer's RAM buffer, ensuring that data updates can be tracked accurately. MINBUFLSN relates to the first update of 'dirty' data pages, while LOWTRANLSN pertains to the earliest update in a transaction table for uncommitted transactions. By utilizing write-ahead logging to derive these components, Shih's approach enables a swifter recovery process while reducing the overhead during logging.

Another crucial patent is his **Method for restoring a database after I/O error employing write-ahead logging**. This invention is designed to minimize data loss during I/O errors and power failures associated with non-atomic writes in a transaction management system. The method employs a recovery log during forward processing and traverses the log upon system restart to execute a REDO operation. It effectively identifies files with I/O errors, preventing future access and allowing for automatic rebuilding of error index files, thus safeguarding against data loss.

Career Highlights

Cheng-Fong Shih has made his mark at the International Business Machines Corporation (IBM), where he continues to push the boundaries of database technology. His innovative mind has led to advancements that significantly improve the efficiency and reliability of data recovery processes, earning him recognition in the field of computer science.

Collaborations

Throughout his career, Shih has worked alongside esteemed colleagues, including William W Myre, Jr and Linda C Elliott. These collaborations have contributed to the richness of the innovations he has developed, fostering an environment of shared knowledge and expertise.

Conclusion

Cheng-Fong Shih's pioneering work in database management and transaction recovery highlights the importance of innovation in technology. His patents not only address pressing issues in data integrity but also pave the way for more efficient systems in the digital age. As he continues to contribute to the field, Shih remains a key figure in the evolution of database solutions.