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公开(公告)号：DE69130715T2
公开(公告)日：1999-08-19
申请号：DE69130715
申请日：1991-03-20
Applicant: IBM
Inventor： DEMERS RICHARD AIME , LINDSAY BRUCE GILBERT , REINSCH ROGER ALAN , ZIMOWSKI MELVIN RICHARD
Abstract: The invention relates to a method of processing requests for the transfer of data from a first data base (40) to a second data base (50) comprising the steps of creating a communications link between the two data bases, and initially transferring from the first data base to the second data base information about the data to be transferred, determining in the second data base the characteristics of the information, and subsequently transferring the required data if the characteristics of the information satisfy predetermined requirements. According to the invention the method is characterised in that the transferred information comprises a description (44) of the data formats used in the first data base, and a description (45) of the data base language used in the first data base. The invention also relates to apparatus for implementing the above method.
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公开(公告)号：CA2034905C
公开(公告)日：1998-09-22
申请号：CA2034905
申请日：1991-01-24
Applicant: IBM
Inventor： ADAIR JOHN GARY , COYLE DANIEL JEROME JR , GRAFE ROBERT JOSEPH , LINDSAY BRUCE GILBERT , REINSCH ROGER ALAN , RESCH ROBERT PETER , SELINGER PATRICIA GRIFFITHS
Abstract: The invention establishes the context in which data exchanged between dissimilar relational database management systems can be mutually understood and preserved. The invention accomplishes this by establishing layers of descriptive information which isolate machine characteristics, levels of support software, and user data descriptions. Optimized processing is achieved by processing the different descriptor levels at different times during the development and execution of the database management systems. Minimal descriptive information is exchanged between the cooperating database management systems. For systems which match, data conversion is completely avoided. For systems which do not match, data conversion is minimized.
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公开(公告)号：DE69132908D1
公开(公告)日：2002-03-14
申请号：DE69132908
申请日：1991-03-11
Applicant: IBM
Inventor： ADAIR JOHN GARY , DEMERS RICHARD AIME , ECIMOVIC DUSAN , JACKSON ROBERT DEAN , LINDSAY BRUCE GILBERT , MURPHY MICHAEL EDWARD , REINSCH ROGER ALAN , RESCH ROBERT PETER , SANDERS RICHARD ROLLAND , SELINGER PATRICIA GRIFFITHS , SUNDAY ROBERT LEO , ZIMOWSKI MELVIN RICHARD
Abstract: The present invention relates to a data base system comprising a first computer (10) which is used to execute an application program (14), a data base (56) containing selected data for use in connection with the application program, a second computer (12) which is used to control the part of the data base system which contains the data base, the first and second computers being different types, means 17) for extracting from the application program data base commands which can be executed on the second computer but cannot be executed on the first computer, and means for replacing the extracted data base commands with call commands and for using the call commands to initiate the execution of the data base commands when required. According to the invention the data base system is characterised in that it also comprises means (46, 50) for transmitting the data base commands to the second computer, and means (52) for utilising the call commands in the application program to initiate the execution of the data base commands by the second computer on the selected data in the data base.
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公开(公告)号：BR9101195A
公开(公告)日：1991-11-05
申请号：BR9101195
申请日：1991-03-26
Applicant: IBM
Inventor： ADAIR JOHN GARY , DEMERS RICHARD AIME , ECIMOVIC DUSAN , JACKSON ROBERT DEAN , LINDSAY BRUCE GILBERT , MURPHY MICHAEL EDWARD , REINSCH ROGER ALAN , RESCH ROBERT PETER , SANDERS RICHARD ROLAND , SELINGER PATRICIA GRIFFITHS , SUNDAY ROBERT LEO , ZIMOWSKI MELVIN RICHARD
Abstract: The present invention relates to a data base system comprising a first computer (10) which is used to execute an application program (14), a data base (56) containing selected data for use in connection with the application program, a second computer (12) which is used to control the part of the data base system which contains the data base, the first and second computers being different types, means 17) for extracting from the application program data base commands which can be executed on the second computer but cannot be executed on the first computer, and means for replacing the extracted data base commands with call commands and for using the call commands to initiate the execution of the data base commands when required. According to the invention the data base system is characterised in that it also comprises means (46, 50) for transmitting the data base commands to the second computer, and means (52) for utilising the call commands in the application program to initiate the execution of the data base commands by the second computer on the selected data in the data base.
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公开(公告)号：CA2119221C
公开(公告)日：1998-09-15
申请号：CA2119221
申请日：1994-03-16
Applicant: IBM
Inventor： GILLES ROBERT ALAN , GRAFE ROBERT JOSEPH , JACKSON ROBERT DEAN , REINSCH ROGER ALAN , SANDERS RICHARD ROLLAND , SLONIM JACOB , ZIMOWSKI MELVIN RICHARD
Abstract: The invention provides transaction synchronization in the form of COMMIT process ing in a distributed, heterogeneous database system wherein some resources are synchroniz ed to a transaction by a single-phase commit procedures while other resources synchronize by multi-phase commit procedures. The invention invests an application requestor at an application site with authority to represent all single-phase commit resources in multi-phase commit processing.
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Patent Agency Ranking
公开(公告)号：DE3788444T2
公开(公告)日：1994-06-23
申请号：DE3788444
申请日：1987-02-05
Applicant: IBM
Inventor： REINSCH ROGER ALAN , ZIMOWSKI MELVIN RICHARD
Abstract: A restartable load without logging method permits the restart of a LOAD operation from the last COMMIT point without requiring the writing of images of loaded records to the log. Instead, the method logs only a minimal amount of information, recording positions within the data sets to be loaded and within the tablespace being loaded.
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公开(公告)号：DE69132908T2
公开(公告)日：2002-09-12
申请号：DE69132908
申请日：1991-03-11
Applicant: IBM
Inventor： ADAIR JOHN GARY , DEMERS RICHARD AIME , ECIMOVIC DUSAN , JACKSON ROBERT DEAN , LINDSAY BRUCE GILBERT , MURPHY MICHAEL EDWARD , REINSCH ROGER ALAN , RESCH ROBERT PETER , SANDERS RICHARD ROLLAND , SELINGER PATRICIA GRIFFITHS , SUNDAY ROBERT LEO , ZIMOWSKI MELVIN RICHARD
Abstract: The present invention relates to a data base system comprising a first computer (10) which is used to execute an application program (14), a data base (56) containing selected data for use in connection with the application program, a second computer (12) which is used to control the part of the data base system which contains the data base, the first and second computers being different types, means 17) for extracting from the application program data base commands which can be executed on the second computer but cannot be executed on the first computer, and means for replacing the extracted data base commands with call commands and for using the call commands to initiate the execution of the data base commands when required. According to the invention the data base system is characterised in that it also comprises means (46, 50) for transmitting the data base commands to the second computer, and means (52) for utilising the call commands in the application program to initiate the execution of the data base commands by the second computer on the selected data in the data base.
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公开(公告)号：ES2125861T3
公开(公告)日：1999-03-16
申请号：ES91302407
申请日：1991-03-20
Applicant: IBM
Inventor： DEMERS RICHARD AIME , LINDSAY BRUCE GILBERT , REINSCH ROGER ALAN , ZIMOWSKI MELVIN RICHARD
Abstract: The invention relates to a method of processing requests for the transfer of data from a first data base (40) to a second data base (50) comprising the steps of creating a communications link between the two data bases, and initially transferring from the first data base to the second data base information about the data to be transferred, determining in the second data base the characteristics of the information, and subsequently transferring the required data if the characteristics of the information satisfy predetermined requirements. According to the invention the method is characterised in that the transferred information comprises a description (44) of the data formats used in the first data base, and a description (45) of the data base language used in the first data base. The invention also relates to apparatus for implementing the above method.
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公开(公告)号：DE69130715D1
公开(公告)日：1999-02-18
申请号：DE69130715
申请日：1991-03-20
Applicant: IBM
Inventor： DEMERS RICHARD AIME , LINDSAY BRUCE GILBERT , REINSCH ROGER ALAN , ZIMOWSKI MELVIN RICHARD
Abstract: The invention relates to a method of processing requests for the transfer of data from a first data base (40) to a second data base (50) comprising the steps of creating a communications link between the two data bases, and initially transferring from the first data base to the second data base information about the data to be transferred, determining in the second data base the characteristics of the information, and subsequently transferring the required data if the characteristics of the information satisfy predetermined requirements. According to the invention the method is characterised in that the transferred information comprises a description (44) of the data formats used in the first data base, and a description (45) of the data base language used in the first data base. The invention also relates to apparatus for implementing the above method.
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公开(公告)号：DE3381324D1
公开(公告)日：1990-04-19
申请号：DE3381324
申请日：1983-05-25
Applicant: IBM
Inventor： REINSCH ROGER ALAN
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