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Research On Self-Adaptive Data Warehouses System

Posted on:2004-03-13Degree:DoctorType:Dissertation
Country:ChinaCandidate:L M KeFull Text:PDF
GTID:1118360095455232Subject:Management Science and Engineering
Abstract/Summary:PDF Full Text Request
The creation and the application of Data Warehouses is the only way for the enterprise to realize the advanced informationalization. In recent decade, lots of different scales Data Warehouse Systems appear to solve history data management and decision support problem. At the same time, the conflict between the nature anti-lifecycle character of DW and currently popular software development technology appears obvious day by day. And now, the DW technology is faced with such serious problem: at the beginning of its creation, the DW system cannot help users to accurately define business meta-data (for determining the Dimensions-Measures space) and integrated meta-data (for determining the integration space); while running, the software also cannot automatically capture the change of users demand and give responses, and it cannot distribute the heavy load of making DW entity and query load of using DW in larger scale. With the application background of the development of PBC Dalian branch "disposal information service system", the decision supporting subsystem of Dalian international cooperating group information system and China life insurance company Dalian branch "Estimate and planning of Market the decision supporting system ", paper applies itself to resolve the above conflict and problem, in order to enhance the Self-adaptive of DW system, to implement integration optimization within DW and measure the users compatibility, and to get a self-adaptive DW system . During the process, it uses DW technology, DW quality, CORBA structure and Agent technology .The content is below:(1) In order to decrease the development cost, to improve the multiplexing of components and to realize load balance and distributional calculation in larger range, paper studies and realizes the self-adaptive architecture of DW with the CORBA technology, Agent technology and Java programming language .As a result, the DW Architecture get the ability of initiative, permanence and intelligence. It is a kind of architecture , which can accept many effective components and the "Plug and Play" components, and support many kinds of OS platforms ,database platforms and network platforms, can conveniently communicate between components and software architecture, components and components , components and user. And sustained by agent , it realizes the distributional calculation , load balance and self-adaptive according to definite criterion in definite range. This architecture is made of lots of Agent and server software, including the component series, database series, quality series, service series and maintenance series. It fully assimilates and makes use of software development technology and component multiplexing technology. Especially during the calling component process, it breaks through the limits that have to use the object sign to connect and the simple name service, and realizes the load balance and distributional calculation.(2) To adapt the requirement of DW individuation and respond to the need of DW change, based on the optimization function of the current DW production, paper brings forward DW integration optimize-path searching algorithm and the DW integration scheme self-optimize algorithm, and studies and realizes the DW integration optimization. A task of top priority tothe DW system which is used frequently, is to update the DW meta-data constantly and periodically, through the machine study, with the special software system, to make DW respond to users demand with best time-space complexity, and in turn, to enhance the implement efficiency and lengthen the lifetime of the DW system. After giving the entire introduce of DW optimization, paper discusses the solving scheme and realization method of integration optimization in detail. During the realization of integration optimization, based on former integration scheme relation drawings, paper brings forward the integration scheme optimize-path searching algorithm and self-optimize algorithm and gets the integration scheme objects ensemble which is...
Keywords/Search Tags:Data Warehouse (DW), OLAP, Artificial Intelligence, Self-Adaptive, DW optimization
PDF Full Text Request
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