Data Management of Object Type Geological Features on Control Dictionary
Hua Weihua
Liu Jidong
Liu Xiuguo
Abstract：The structure and access interfaces of data are designed by reference to external schema changes in traditional man-agement and application of geological data,for which application programs have to be modified in case of any external schema changes,even if there are not much variations in business logic.To tackle the issue,control dictionary tables are proposed in this study by analyzing the characteristics of different geological attribute data and generalizing external schema of geological databases based on view mechanism of relation databases,which is used in character-set formed from determinant attributes needed for geological business analysis and evaluation.Meanwhile,data access interfaces are designed according to the data structures of the control dictionary tables which abstract the object-oriented data model of geological professions and map the relation between the data model and geological data.It is shown that it is only necessary to modify the mapping relations between control dictionary and external schema rather than applications to realize the expansion of geological databases dynami-cally,in which the control dictionary separates the operation of geological data by users and from the processing by computers as a middleware,thus ensuring the logic independence of program and data layers.
Keywords：control dictionarygeological objectuser tabledata tablemappinginformation science
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 425-430 )