Method of updating data in a compressed data structure

Details Method of updating data in a compressed data structure Method of updating data in a compressed data structure

2005-05-10

2005-05-10

Rones, Charles (Department: 2164)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

06892207

ABSTRACT:
A method of and computer--readable instructions for updating data stored in a compressed data structure. The data is stored in compressed form in one or more uniquely identified data pages. The method includes decompressing a data page and reading an entry, having an identifier, from a delta file and reading an entry from the decompressed data page. If the delta file entry identifier identifies the data page entry, the data page entry is updated based on the delta file entry. If the delta file entry identifier does not identify a data page entry, a data page entry based on the delta file entry is created. If all data file entries and data page entries have been read and handled, the data page entries are compressed.

REFERENCES:
patent: 5452405 (1995-09-01), Vondran, Jr.
patent: 5813017 (1998-09-01), Morris
patent: 6542906 (2003-04-01), Korn
patent: 20040148302 (2004-07-01), McKay et al.

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