Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2005-09-13
2005-09-13
Kindred, Alford W. (Department: 2163)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000, C714S100000, C714S001000, C714S002000, C714S699000
Reexamination Certificate
active
06944635
ABSTRACT:
A method for file deletion and recovery against system failures in a database management system comprising steps of deleting files listed in a pending action list during a transaction commit process, writing a non-atomic file deletion as an atomic operation into a log and recovering uncompleted file deletion during restart recovery by using the log is disclosed. When system failures occur during file deletion in a database management system, resources of which releasing is interrupted by failures are released perfectly through recovery step, so it is advantageous in that coherency of data is maintained and efficiency of storage device arises.
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patent: 5712971 (1998-01-01), Stanfill et al.
patent: 1996-24068 (1996-07-01), None
C. Mohan, et al; ARIESA Transaction Recovery Method Supporting Fine-Granularity Locking and Partial Rollbacks Using Write-Ahead Logging; ACM Transactions on Database System, vol. 17, No. 1; Mar. 1992; pp. 94-162.
Kim Hong-Yeon
Kim June
Kim Myung-Joon
Won Jongho
Electronics and Telecommunications Research Insitute
Kindred Alford W.
Mayer Brown Rowe & Maw LLP
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