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Pattern standardized method of object proxy database

An object proxy and database technology, applied in the database field, can solve problems such as update anomalies and attribute redundancy, and achieve the effects of ensuring correctness, eliminating attribute redundancy, and eliminating update anomalies

Active Publication Date: 2013-06-05
WUHAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The present invention aims at the problem of attribute redundancy and update abnormality in the process of schema evolution caused by the complex personalized operation of the object proxy database, and provides a method for normalizing the schema of the object proxy database.

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  • Pattern standardized method of object proxy database

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Embodiment Construction

[0038] Combining the characteristics of the object proxy model, the invention provides a technical scheme for normalizing the schema of the object proxy database according to the problems of attribute redundancy and update abnormality in the evolution process of the object proxy database schema. By this method, attribute redundancy and update exceptions in the schema are eliminated, and the correctness of the object proxy database schema and the efficiency of the database system are ensured.

[0039] The theoretical basis is described below in order to understand the technical solution of the present invention.

[0040] The object proxy model represents entities in the real world as objects or proxy objects. Objects encapsulate the properties and operation methods of entities, describe the characteristics of entities and simulate the behavior of entities; proxy objects change or expand the interfaces of objects to reflect the real activities of entities. Features and behavior ch...

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Abstract

The invention provides a pattern standardized method of an object proxy database. According to the pattern standardized method of the object proxy database, pattern information of structured query language (SQL) statements of the object proxy database is acquired to form a pattern digraph; according to a first class normal type definition of the object proxy database, non-standardized patterns are converted into first class normal type; and according to a secondary class normal type definition of the object proxy database, the first class normal type is converted into a second class normal type, and a standardized object proxy database mode is generated. According to the normal type leveled standardized object proxy database mode, the pattern standardized method of the object proxy database can eliminate attribute redundancy and update abnormality produced in a development process of the object proxy database mode, and finally guarantees the correctness of the object proxy database mode and the high efficiency of a data system.

Description

technical field [0001] The invention relates to the technical field of databases, in particular to a mode standardization method of an object proxy database. Background technique [0002] With the increasing expansion of information, people's requirements for data processing are getting higher and higher. The database system is the foundation of the information system. It involves almost all aspects of data from storage, integration, release, and application. The database schema has always been the focus of research in the database field. The object proxy model is designed and implemented based on this idea. It expands the traditional object-oriented data model by introducing concepts such as proxy objects and proxy classes, and flexibly implements multiple abstract mechanisms such as object views, role diversity, and object migration, making it both flexible and relational data models , and has the ability to represent complex information in an object-oriented data model...

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Application Information

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IPC IPC(8): G06F17/30
Inventor 彭智勇江俊彦徐知杰郭思培
Owner WUHAN UNIV
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