DE69129678D1 - Verfahren und System für eine konsequente Zeitfestlegung in verteilten Rechnerdatenbanken - Google Patents

Verfahren und System für eine konsequente Zeitfestlegung in verteilten Rechnerdatenbanken

Info

Publication number
DE69129678D1
DE69129678D1 DE69129678T DE69129678T DE69129678D1 DE 69129678 D1 DE69129678 D1 DE 69129678D1 DE 69129678 T DE69129678 T DE 69129678T DE 69129678 T DE69129678 T DE 69129678T DE 69129678 D1 DE69129678 D1 DE 69129678D1
Authority
DE
Germany
Prior art keywords
time setting
distributed computer
consistent time
computer databases
databases
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69129678T
Other languages
English (en)
Other versions
DE69129678T2 (de
Inventor
David B Lomet
Philip B Bernstein
James Johnson
Kenneth Wilner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digital Equipment Corp
Original Assignee
Digital Equipment Corp
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 Digital Equipment Corp filed Critical Digital Equipment Corp
Application granted granted Critical
Publication of DE69129678D1 publication Critical patent/DE69129678D1/de
Publication of DE69129678T2 publication Critical patent/DE69129678T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • 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
    • G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
    • G06F16/2477—Temporal data queries
    • 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
    • G06F16/21—Design, administration or maintenance of databases
    • G06F16/219—Managing data history or versioning
    • 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
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Software Systems (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Fuzzy Systems (AREA)
  • Computer Hardware Design (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
DE69129678T 1990-05-22 1991-05-20 Verfahren und System für eine konsequente Zeitfestlegung in verteilten Rechnerdatenbanken Expired - Fee Related DE69129678T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/527,087 US5212788A (en) 1990-05-22 1990-05-22 System and method for consistent timestamping in distributed computer databases

Publications (2)

Publication Number Publication Date
DE69129678D1 true DE69129678D1 (de) 1998-08-06
DE69129678T2 DE69129678T2 (de) 1999-02-25

Family

ID=24100039

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69129678T Expired - Fee Related DE69129678T2 (de) 1990-05-22 1991-05-20 Verfahren und System für eine konsequente Zeitfestlegung in verteilten Rechnerdatenbanken

Country Status (5)

Country Link
US (1) US5212788A (de)
EP (1) EP0458564B1 (de)
JP (1) JPH07104813B2 (de)
KR (1) KR940005819B1 (de)
DE (1) DE69129678T2 (de)

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Also Published As

Publication number Publication date
EP0458564A3 (en) 1993-08-11
EP0458564A2 (de) 1991-11-27
DE69129678T2 (de) 1999-02-25
KR940005819B1 (ko) 1994-06-23
JPH04232545A (ja) 1992-08-20
EP0458564B1 (de) 1998-07-01
JPH07104813B2 (ja) 1995-11-13
US5212788A (en) 1993-05-18
KR910020569A (ko) 1991-12-20

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