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 Title: |
EP0187373B1:
RELATIONAL DATABASE MANAGEMENT SYSTEM[German][French]
[ Derwent Title ]
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Country:
Kind: |
EP European Patent Office (EPO)
B1 PATENT SPECIFICATION i
(See also:
EP0187373A2,
EP0187373A3 )
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| Inventor: |
Huber, Val Joseph;
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| Assignee: |
WANG LABORATORIES INC.
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| Published / Filed: |
1995-04-12
/ 1985-12-23
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| Application Number: |
EP1985000116528
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| IPC Code: |
Advanced:
G06F 3/00;
G06F 7/22;
G06F 11/32;
G06F 12/00;
G06F 13/00;
G06F 15/02;
G06F 17/21;
G06F 17/30;
Core:
more...
IPC-7:
G06F 17/30;
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| ECLA Code: |
G06F17/30S8R;
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| Priority Number: |
| 1985-01-11 |
US1985000690800 |
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| Abstract: |
[From equivalent
EP0187373A2]
In a relational database management system, interactive error-handling means comprises means for calling an operation means and a fetch means. The fetch means operates against a cursor to retrieve a record occurrence noninteractively for operation. The operation means validates the selected operation and can set an error condition signal. When the selected operation is valid, the operation is performed and the operation means provides a return signal to the calling means, which calls the fetch means to retrieve the next record occurrence. When the selected operation is invalid, the fetch means responds to the error condition signal by operating interactively to display the previously retrieved signal with an error message. The interactive user can correct the error so that noninteractive operation can continue.
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| Attorney, Agent or Firm: |
Behrens, Dieter, Dr.-Ing. et al ;
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| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
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| Designated Country: |
BE DE FR GB
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| Family: |
Show 19 known family members
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First Claim:
Show all claims |
1. Relational database management apparatus (10) having stored therein relations (150), each relation comprising a plurality of rows, each row comprising a plurality of fields,
said relations conforming with constraints sufficient to permit operations on said relations to be modeled and analyzed by relational analysis,
and including
target specifying means (158) for specifying in response to a target specifying signal a target relation
and display means (18) for displaying rows of a target relation
characterized by
means (20) for receiving designating signals interactively input while rows of a target relation are displayed, said signals defining a subset of rows of the displayed rows of a relation,
a marking field associated to each row to store said designating signals, and means for forming a new relation (176) not among said stored relations, said newly formed relation having therein those rows and only those rows of said so marked subset of rows, said new relation conforming with said sufficient constraints.
[German]
[French]
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Description
Expand description |
+ RELATIONAL DATABASE MANAGEMENT SYSTEM
The invention relates to the operation of data processing systems, in particular to the management of relational data-bases stored in the memory of such systems. The invention further relates to means to facilitate the interactive use, retrieval of related records and error-handling and updating of such relational databases.
+ BACKGROUND OF THE INVENTION
+ RELATIONAL DATABASE MANAGEMENT
+ DETAILED DESCRIPTION OF THE INVENTION
+ Data processing system generally
+ Keyboard and PF keys
+ Storage 17
+ Program storage
+ Brief description of program storage
+ Data storage
+ Screen-file 151: PSCR, PSMP, POP, and PDEF
+ Screen formats
+ LIST screen format
+ Other formats
+ Cursor 158
+ Other data structures
+ Description of program modules and interaction with storage
+ Operation.
+ SELECT screen
+ RETRIEVAL OF RELATED RECORDS
+ INTERACTIVE ERROR HANDLING MEANS
+ RETRIEVAL OF RELATED RECORDS.
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