Mapping method between relational database schema and ontology for ship equipment maintenance support information
A mapping method and database technology, which is applied in the field of data integration of heterogeneous databases of ship equipment maintenance support information, can solve problems such as error-prone, time-consuming and labor-intensive, and high time complexity
Active Publication Date: 2018-04-24
NAVAL UNIV OF ENG PLA
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Problems solved by technology
The way of manually constructing the mapping is time-consuming, labor-intensive and error-prone. Therefore, some work has been carried out on the establishment of automatic mapping, such as the Chinese invention invention with the application number 201410314898. "
The fully automated method described in this patent is not necessarily effective, and when the scale of the relational database schema and ontology increases, the time complexity of the method based on structural similarity propagation is too high to be acceptable
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[0046] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
[0047] Firstly, the present invention classifies the element types of the relational database schema and ontology. The ontology elements mainly include classes, object attributes and data type attributes. The relation of relational database schema is divided into entity type relation and relational type relation. Attributes are divided into foreign key attributes and non-foreign key attributes, and then on the basis of the above element classification, according to heuristic rules, establish the mapping type between relational database schema elements and ontology elements;
[0048] Then, by synthesizing various available information of elements, a variety of strategies are used to discover the mapping relationship between relational database schema and ontology elements. Firstly, the establishment of ontology in the field of ship maintenance and support...
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The invention discloses a method for mapping between a ship equipment maintenance and guarantee information relation data base mode and a ship equipment maintenance and guarantee information body. The method includes the following steps that step1, elements of the ship equipment maintenance and guarantee information body and elements of the ship equipment maintenance and guarantee information relation data base mode are classified, and a mapping type between the ship equipment maintenance and guarantee information relation data base mode and the ship equipment maintenance and guarantee information body is established; step2, a multi-strategy combination method is utilized for obtaining the mapping relation between the ship equipment maintenance and guarantee information relation data base mode to be processed and the ship equipment maintenance and guarantee information body to be processed. According to the method, existing ship equipment maintenance and guarantee information can be effectively integrated and conveniently and effectively managed by maintenance and guarantee personnel, decision support and remote maintenance and guarantee supporting capacity are provided, efficient utilization of the maintenance and guarantee information and optimization of guarantee resources are promoted, the maximum performance of equipment can be achieved, and therefore the method has great theoretical value and practical significance.
Description
technical field [0001] The invention relates to the technical field of data integration of a heterogeneous database of ship equipment maintenance support information, and in particular to a mapping method between a ship equipment maintenance support information relational database mode and an ontology. technical background [0002] With the rapid development of information technology, there are more and more information systems related to ship equipment maintenance and support. Due to different business and functional requirements, different organizations and departments have developed corresponding information management systems. The data environments between these systems are different. Data descriptions vary widely, forming "data islands" one by one. "Data islands" have caused a large amount of redundant data and garbage data among information systems, which cannot guarantee data consistency and low utilization rate of information. It is time-consuming and labor-intensiv...
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IPC IPC(8): G06F17/30
CPCG06F16/248G06F16/252G06F16/284
Inventor 马良荔孙煜飞李永杰苏凯覃基伟许国鹏
Owner NAVAL UNIV OF ENG PLA
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