WO1996018159A3 - Implementation independent extensible query architecture for information retrieval systems - Google Patents

Implementation independent extensible query architecture for information retrieval systems Download PDF

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Publication number
WO1996018159A3
WO1996018159A3 PCT/US1995/016496 US9516496W WO9618159A3 WO 1996018159 A3 WO1996018159 A3 WO 1996018159A3 US 9516496 W US9516496 W US 9516496W WO 9618159 A3 WO9618159 A3 WO 9618159A3
Authority
WO
WIPO (PCT)
Prior art keywords
query
node
objects
search
models
Prior art date
Application number
PCT/US1995/016496
Other languages
French (fr)
Other versions
WO1996018159A2 (en
WO1996018159B1 (en
Inventor
Graham Spencer
Original Assignee
Architext Software Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Architext Software Inc filed Critical Architext Software Inc
Priority to DE69509118T priority Critical patent/DE69509118T2/en
Priority to AU46413/96A priority patent/AU4641396A/en
Priority to EP95944342A priority patent/EP0796470B1/en
Publication of WO1996018159A2 publication Critical patent/WO1996018159A2/en
Publication of WO1996018159A3 publication Critical patent/WO1996018159A3/en
Publication of WO1996018159B1 publication Critical patent/WO1996018159B1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/30—Information retrieval; Database structures therefor; File system structures therefor of unstructured textual data
    • G06F16/33—Querying
    • G06F16/3331—Query processing
    • G06F16/334—Query execution
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/245—Query processing
    • G06F16/2453—Query optimisation
    • G06F16/24534—Query rewriting; Transformation
    • G06F16/24542—Plan optimisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99931—Database or file accessing
    • Y10S707/99933—Query processing, i.e. searching
    • Y10S707/99935—Query augmenting and refining, e.g. inexact access

Abstract

An information retrieval system incorporates an extensible query architecture allowing an applications programmer to integrate new query models into the system as desired. The query architecture is based on an abstract base class of query nodes, or code objects that retrieve records from the database. Specific subclasses for particular query models are derived from the base class. Each query node class includes a search function that iteratively searches the database for matching records. Query node objects are instantiated by associated node creator class objects. A parser is used to parse a search query into its components, including nested search queries used to combine various query models. The parser determines the particular search operator keywords, and the node creator object for instantiating the appropriate query node object for earch search operator. The node creator objects return pointers to the created query nodes, allowing the parser to assemble complex hierarchical query nodes that combine multiple query models.
PCT/US1995/016496 1994-12-07 1995-12-07 Implementation independent extensible query architecture for information retrieval systems WO1996018159A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69509118T DE69509118T2 (en) 1994-12-07 1995-12-07 IMPLEMENTATION-INDEPENDENT EXTENDABLE QUERY ARCHITECTURE FOR SYSTEMS FOR INFORMATION RECOVERY
AU46413/96A AU4641396A (en) 1994-12-07 1995-12-07 Implementation independent extensible query architecture for information retrieval systems
EP95944342A EP0796470B1 (en) 1994-12-07 1995-12-07 Implementation independent extensible query architecture for information retrieval systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/350,967 1994-12-07
US08/350,967 US5577241A (en) 1994-12-07 1994-12-07 Information retrieval system and method with implementation extensible query architecture

Publications (3)

Publication Number Publication Date
WO1996018159A2 WO1996018159A2 (en) 1996-06-13
WO1996018159A3 true WO1996018159A3 (en) 1996-09-06
WO1996018159B1 WO1996018159B1 (en) 1996-10-10

Family

ID=23378999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/016496 WO1996018159A2 (en) 1994-12-07 1995-12-07 Implementation independent extensible query architecture for information retrieval systems

Country Status (7)

Country Link
US (1) US5577241A (en)
EP (1) EP0796470B1 (en)
AT (1) ATE179004T1 (en)
AU (1) AU4641396A (en)
DE (1) DE69509118T2 (en)
ES (1) ES2132769T3 (en)
WO (1) WO1996018159A2 (en)

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