Mapping method between relational database schema and ontology for ship equipment maintenance support information

Abstract

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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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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