A semantic correctness oriented relational database access method

作者：Tang Funian; Yao Li^*; Li Jinyang

来源：Journal of National University of Defense Technology, 2012, 34(3): 103-108.

• Data access
• Data assets
• Data semantics
• Description logic
• Impedance mismatch
• Mapping formalism
• Model theory
• Prototype system
• Relational data
• Relational Database
• Special structure

Nowadays, organization faces the problem of acquiring correct information from data asset to support decision-making. To solve this problem, a semantic correctness oriented relational data access method, namely SCORDA, is proposed. Firstly, ontology was used to describe the concept view, which is used in data access task, and description logic makes a suitable tradeoff between expressiveness and complexity. Secondly, a LAV+GAV mapping formalism was adopted to solve the schema heterogeneity and impedance mismatch problem. Furthermore, a special structure named dynamic ABox is provided to deal with the instance checking problem, and to ensure the semantic correctness of answers based on the model theory semantic of ontology. Finally, the feasibility of SCORDA method, through implementing a prototype system, was validated.

• 出版日期2012