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Enhanced data access for information systems

An information system and data technology, applied in the field of information systems, can solve problems such as short life of state information

Inactive Publication Date: 2011-09-14
CASSIDIAN FINLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lifetime of this state information in a communication system is very short

Method used

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  • Enhanced data access for information systems
  • Enhanced data access for information systems
  • Enhanced data access for information systems

Examples

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Embodiment Construction

[0021] It should be appreciated that the following embodiments are exemplary. Furthermore, although this specification may refer to "a", "an" or "some" embodiments in various places, it is not necessary that the same embodiments are referred to or that the features in question apply to more than a single embodiment. Single features of different embodiments may be combined to provide further embodiments.

[0022] The present invention relates to information systems in which data provided from multiple sources is maintained in multiple database instances accessed by multiple consumers. Various devices and system configurations applying various communication technologies may be used alone or in combination to implement embodiments of the present invention. Information systems and technologies are constantly evolving, and embodiments of the invention may require modifications that are substantially apparent to those skilled in the art. Therefore, all words and expressions in thi...

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Abstract

An information system that comprises a data source that transmits a data item to a group of database instances using a packet-switched communication protocol in which retransmission of the data item to a data base instance is independent from reception of an acknowledgement to the transmitted data item from the database instance. A database instance receives the data item from the data source, stores it as a present data item and opens access to the present data item. A data consumer queries information on the present data item from the database instance and is provided with means to detect whether the information included in a response to the query is valid or not. If the information is not valid, the data consumer initiates a new query from another destination.

Description

technical field [0001] The present invention relates to information systems, and more particularly to information systems including multiple data sources, database instances and data consumers. Background technique [0002] In large multi-user information systems, data is typically generated and accessed by multiple entities located in multiple places. To facilitate efficient use of information, data is often distributed across several database instances located in different places in the network. However, the requirement is that information needs to be available to processes and users who are to apply the information quickly and efficiently. Furthermore, it is important that the information is simply configured so that cost-effective implementation is possible. [0003] Traditional systems employ a number of methods to ensure the availability of information. One option is to maintain multiple copies (called replicas) of data stored in multiple storage instances, and to m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F17/30389G06F16/242
Inventor T·萨武宁H·萨洛沃里O-P·拉蒂南
Owner CASSIDIAN FINLAND