Logical Navigation in the Concept-Oriented Data Model
Alexandr A. Savinov · 2005
The paper describes logical navigation in the concept-oriented data model. This model explicitly and formally separates physical structure and logical structure so that each element of the model is simultaneously a collection and a combination of other elements. The physical structure is used to representing and access by elements by means of references. The logical structure is used to reflect the problem domain dependencies. The two-level model considered in the paper consists of a set of concepts and a set of items. Concept structure defines the model syntax while item structure defines its semantics. In the paper it is shown how the properties of the model can be used for logical navigation where we do not need to specify join conditions or other complicated parameters of queries. 1.