-
公开(公告)号：BR9101162A
公开(公告)日：1991-11-05
申请号：BR9101162
申请日：1991-03-25
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.
-
公开(公告)号：BR9101161A
公开(公告)日：1991-11-05
申请号：BR9101161
申请日：1991-03-25
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 relates to a system including a first database management system for managing a database (40) including data having a first data format and a second database management system for managing a database (50) including data having a second data format. The invention is a method for converting data transmitted between the first and second database management systems, the method including the steps of sending from the first to the second database management system a command containing data in a data format native to the first database management system; and at the second database management system, converting the data in the command into a data format native to the second database management system.
-
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.
-
公开(公告)号：CA2305969A1
公开(公告)日：2000-10-22
申请号：CA2305969
申请日：2000-04-19
Applicant: IBM
Inventor： ELLIOT STEVEN K , PANWAR RAJENDRA BHAGWATISINGH , KRISHNAMURTHY SAILESHWAR , LINDSAY BRUCE GILBERT
Abstract: A method, apparatus, and article of manufacture for providing to a signature hash for checking versions of abstract data types. An identifier is constructed for the abstract data type that is substantially unique to the abstract data type, wherein the identifier comprises a concatenation of various attributes for the abstract data type. The constructed identifier is hashed to generate a signature hash value for the abstract data type, which is then stored both in the database and a class definition for the abstract data type. When the class definition is instantiated as a library function, it accesses the abstract data type from the database, and compares the signature hash value from the database and the signature hash value from the class definition in order to verify that the class definition is not outdated. The class definition is outdated when the abstract data type has been altered without the signature hash value being regenerated and re-stored in the database and the class definition.
-
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.
-
Patent Agency Ranking
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.
-
公开(公告)号：DE69131543T2
公开(公告)日：2000-03-30
申请号：DE69131543
申请日：1991-03-20
Applicant: IBM
Inventor： ADAIR JOHN GARY , COYLE DANIEL JEROME , GRAFE ROBERT JOSEPH , LINDSAY BRUCE GILBERT , RAINSCH ROGER ALAN , RESCH ROBERT PETER , SELINGER PATRICIA GRIFFITHS
Abstract: The invention relates to a system including a first database management system for managing a database (40) including data having a first data format and a second database management system for managing a database (50) including data having a second data format. The invention is a method for converting data transmitted between the first and second database management systems, the method including the steps of sending from the first to the second database management system a command containing data in a data format native to the first database management system; and at the second database management system, converting the data in the command into a data format native to the second database management system.
-
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.
-
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.
-
公开(公告)号：DE3889254T2
公开(公告)日：1994-11-17
申请号：DE3889254
申请日：1988-05-10
Applicant: IBM
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.018 seconds)
