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Index tree based huge database access control method

An access control and database technology, applied in the field of data processing, can solve the problem of not being able to support vector and raster data applications at the same time, and achieve the effects of facilitating policy definition and search, improving the efficiency of authority determination, and simplifying the authority comparison process.

Active Publication Date: 2010-05-12
INST OF SOFTWARE - CHINESE ACAD OF SCI
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Problems solved by technology

However, none of these authorization models can support the application of vector and raster data at the same time, and cannot well solve the conflict between positive authorization and negative authorization

Method used

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  • Index tree based huge database access control method
  • Index tree based huge database access control method
  • Index tree based huge database access control method

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Embodiment Construction

[0042] The present invention will be further described below through the embodiments in conjunction with the accompanying drawings.

[0043] In this embodiment, as Figure 4 The shown spatial database access control system implements the method of the present invention, and the system includes two parts, a front end and a back end. Among them, the front end is mainly responsible for processing the user's request and accepting the result returned by the back end. The backend is mainly the access control processing part of the spatial database, which is divided into three parts: the index search module, the authority judgment module, and the result return module. After receiving the request initiated by the front-end, first use the index search module to search for the corresponding permission information and access object information; then make the corresponding permission judgment in the permission judgment module, and finally return the result to the front-end.

[0044] The...

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Abstract

The invention discloses an index tree based huge database access control method, belonging to the technical field of data processing. The invention aims at combining twice retrieval for access control of data objects in the traditional access control methods into once retrieval in order to improve the efficiency of access control. The method comprises a) establishing an index tree for a database, b) establishing an authorization message set on each node of the index tree and c) after the users make access requests, sequentially retrieving the authorization message set of each node downwards layer by layer from the root node of the index tree to the node of the data objects until the determined access control results can be obtained according to the authorization message set on a certain node, wherein the set comprises the operation authority of the users towards all the data objects in the nodes and the child nodes of the nodes, and the determined access control results comprise acceptance or refuse of the access requests. The method can be used for various huge databases, in particular suitable for spatial databases.

Description

technical field [0001] The invention relates to massive databases, in particular to an index tree-based access control method for massive databases, belonging to the technical field of data processing. Background technique [0002] With the increasing popularity of space technology, users can access any range of objects on the earth through Google Earth and MS TerraServer, and even observe their movement changes; high-tech systems such as the Global Positioning System (GPS) and the Inertial Navigation System (INS) are related. The combined intelligent real-time geographic information system makes geospatial data a practical tool. Even if the user is in an unfamiliar city, he can quickly locate his position and query road information through GPS and other devices. It can be seen that the demand for space technology is constantly growing. The convenient and fast operation method of spatial geographic data, on the one hand, satisfies users' quick access to spatial information,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 张颖君张德胜陈驰张敏张妍洪澄王伏根
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI
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