Patent US2363160A successfully refreshed from Google Patents.
EP0230616A2
Expired / Lapsed
EP
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Library management system
Assignee: International Business Machines Corp
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Filing: 1986-12-18
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Granted: —
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Expires: 2006-12-18
Abstract
Abstract A method for improving the performance of library management systems stored in computer storage. Two types of files are created for each document in storage, one of which contains the original document and a set of updated versions to the document. The other file contains control information to map out a specific version of the document.
Inventors
- 👤 Joseph Allen Gresham, Iii
- 👤 Bohdan Myren Lenyszyn
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 01:27
CPC Classifications
G; G06; G06F; G06F8/00; G06F8/70; G06F8/71; G06F16/00; G06F16/90; G06F16/93
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
In a data processing system, a method for storing a document and information concerning one or more modified versions of said document comprising the steps of: storing the document and delta records thereof; establishing a separate logical view file containing control records which may be used to construct a selected modified version.
Claim 2
Dependent Claim
52 words
In a data processing system, a method for storing a document and information concerning one or more modified versions of said document comprising the steps of: storing the document and delta records thereof; establishing a separate logical view file containing control records which may be used to construct a selected modified version.
Claim 3
Dependent Claim
63 words
A method as in claim 1 wherein said logical view file comprises: the relative record position of the first line for each subset of sequential records which have the same type of modification; the record position in said document of the first changed line; a count of the sequential relative records in each said subset; and the type of modification comprising each subset.
Claim 4
Dependent Claim
19 words
A method as in claim 2 wherein said types of modifications comprise: matched lines, deletions, insertions, and changed lines.
Claim 5
Dependent Claim
54 words
A method as in claim 2 further comprising the steps of: sequentially processing the control records in the logical view section associated with a selected modified version; and selectively retrieving information in said original version and said delta records under control of said logical view file so as to recreate said selected modified version.
Claim 6
Dependent Claim
21 words
A method is in claim 2 wherein said logical view file further comprises information concerning a history of selected delta records.
Claim 7
Dependent Claim
16 words
A method is in claim 1 wherein said delta records are appended to said original version.
Claim 8
Dependent Claim
55 words
In a data processing system for storing and retrieving a document and modified versions thereof: means for storing said document; means for storing delta records of said document; means for storing control records related to each said modified version of said document indicative of the specific differences between said document and said modified version thereof.
Claim 9
Dependent Claim
55 words
In a data processing system for storing and retrieving a document and modified versions thereof: means for storing said document; means for storing delta records of said document; means for storing control records related to each said modified version of said document indicative of the specific differences between said document and said modified version thereof.
Claim 10
Dependent Claim
62 words
A system as in claim 7 wherein said control records comprises: the relative record position of the first line for each subset of sequential records which have the same type of modification; the record position in said document of the first changed line; a count of the sequential relative records in each said subset; and the type of modification comprising each subset.
Claim 11
Dependent Claim
20 words
A system as in claim 8 wherein such control records further comprise information concerning a history of selected delta records.
Claim 12
Dependent Claim
15 words
A system as in claim 7 wherein said delta records are appended to said document.
References Cited (Backward Citations)
No citation records indexed.
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