[특허]Managing a data set

[미국특허] Managing a data set 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-007/00 G06F-017/30 H04L-029/08
출원번호	US-0677152 (2017-08-15)
등록번호	US-10025816 (2018-07-17)
발명자 / 주소	Perez, Miguel A. Reed, David C. Smith, Max D. Wood, Carrie B.
출원인 / 주소	International Business Machines Corporation
대리인 / 주소	Wahlquist, Jay
인용정보	피인용 횟수 : 0 인용 특허 : 24

초록 ▼

A method of and system for managing a data set of a storage facility is disclosed. The data set may be a sequential-access data set. The method and system may include structuring the sequential-access data set to have a first group-of-records configured for adding a second group-of-records to the sequential-access data set. The method and system add a second group-of-records to the sequential-access data set. The method and system merge the second group-of-records with the first group-of-records in response to a triggering event. The method and system establish, in response to merging the second group-of-records with the first group-of-records, a marker configured to indicate the first and second group-of-records, as merged, is sorted.

대표청구항 ▼

1. A computer program product for managing records of a sequential-access data set of a storage system, the computer program product comprising a non-transitory computer readable storage medium having a computer readable program stored therein, wherein the computer readable program, when executed on a first computing device, causes the first computing device to: sort a first group-of-records of the sequential-access data set, wherein the sequential access data set includes one of Basic Sequential Access Method (BSAM), Queued Sequential Access Method (QSAM), and Virtual Storage Access Method (VSAM); update a first field in a catalog entry of the sequential-access data set with a value indicating a record position of a last sorted record in the first group-of-records;add a second group-of-records to the sequential-access data set after the record position of the last sorted record in the first group-of-records;update a second field in the catalog entry with a value indicating the number of unsorted records in the second group-of-records;compare the value in the second field to a threshold associated with a quantity-of changes to the sequential-access data set performed by a processor since a previous sort, wherein the quantity-of-changes is determined as a percentage of the total size of the sequential-access data set, when the data set contains one-thousand records and one-percent of the data set is a trigger, the quantity-of-changes is ten because ten changes will set off the triggering event;in response to determining that the value in the second field exceeds the threshold, sorting the second group-of-records and merging the sorted second group-of-records with the sorted first group-of-records such that, with respect to order, the first group-of-records and the second group-of-records appear as a single group;update the first field in the catalog entry with a value indicating a record position of a new last sorted record in the merged first and second group-of-records; andreset the second field in the catalog entry to zero after merging the second group-of-records with the first group-of-records.

이 특허에 인용된 특허 (24) 인용/피인용 타임라인 분석

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Biles Bertram R. (Manhattan KS), Data storage and retrieval system with improved data base structure.
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LeCrone, Douglas; Pocock, Bruce A., Host system for mass storage business continuance volumes.
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Perez, Miguel A.; Reed, David C.; Smith, Max D.; Wood, Carrie B., Managing a data set.
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Perez, Miguel A.; Reed, David C.; Smith, Max D.; Wood, Carrie B., Managing a data set.
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Coyle ; Jr. Dan J. (Austin TX) Lindsay Bruce G. (San Jose CA), Method and system for supporting concurrent use during sequential batch applications utilizing persistent cursors.
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Kasebayashi Tasuku,JPX ; Ichikawa Yasuhiko,JPX, Method for buffer management in a disk drive having a first segment for storing burst data and a second segment used for.
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Fujiwara Shinji,JPX ; Shintani Yooichi,JPX ; Nagasaka Mitsuru,JPX ; Hamanaka Naoki,JPX ; Suzuki Mikiko,JPX, Method for storing records of a distributed database by plural processors to provide a host processor with sorted recor.
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Stolfo Salvatore J. (80 Kenilworth Rd. Ridgewood NJ 07450) Hernndez Mauricio A. (New York NY), Method of merging large databases in parallel.
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Edem Brian C. (San Jose CA) Helliwell Richard P. (Colorado Springs CO), Multiple record group rebound sorter.
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Edem Brian C. (San Jose CA) Helliwell Richard P. (Colorado Springs CO) Johnston John T. (San Jose CA) Lary Richard F. (Colorado Springs CO), Sort and merge system using tags associated with the current records being sorted to lookahead and determine the next re.
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Challapalli, Venkata Vijay Chaitanya, Sorting a data set by using a limited amount of memory in a processing system.
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de la Iglesia, Erik; Sikdar, Som, Storage device prefetch system using directed graph clusters.
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Hansen Kurt (Santa Cruz CA), System and methods for improved sorting.
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Rozenwald, Guy; Haham, Uri; Machol, Gary, Systems and methods for merging source records in accordance with survivorship rules.
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Quistgaard Jens Ulrich, Three dimensional ultrasonic diagnostic image rendering from tissue and flow images.
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A	생활필수품
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[미국특허] Managing a data set 원문보기