Modeling method of data logic model utilizing public conceptual sets
A data logic and model modeling technology, applied in the field of computer science database modeling, can solve the problems of lack of reusability, limited expressive ability, and inappropriate to express logical relationships, so as to improve reusability, accelerate development speed, The effect of shortening the development process
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0038] The present invention is a data logic model modeling method using a public concept set, such as figure 1 As shown, the modeling method mainly includes the following steps:
[0039] Step 1: Extend the traditional entity-relationship model (E-R model), add relationship types, including dependency relationships, containment relationships, aggregation relationships, multiple relationships, subdivide the types of attributes, and expand the original single attribute into a conceptual attribute , composite attributes, and basic attributes to improve the expressive ability, thereby forming a new set of data logic model description language DLML (Data Logic Model Language). DLML is a set of abstract element definitions and a set of element structure specifications. The used The storage file format is MLD;
[0040] Step 2, the modeler uses the ...
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