XML (Extensible Makeup Language) document access control method and system for XML database system

Abstract

The invention discloses an XML (Extensible Makeup Language) document access control method and system for an XML database system. The XML document access control method comprises the following steps of: constructing a logical data view DAG (Direct Acyclic Graph) with authority configuration information, wherein the logical data view DAG provides an XML document multilayer storage logical view with the authority configuration information to subscribers, an XML document can be accessed through a plurality of paths, subscribers with different authorities are configured with different paths, and the different paths show different authorities; carrying out access authority calculation on nodes of the logical data view DAG level by level in the process of carrying out access control calculation, wherein as long as the access authority for the present path node is obtained, a next level node of the access path is authorized for entrance till the XML document is accessed; and if the access on one node is refused, the whole access is refused. According to the XML document access control method and the XML document access control system, disclosed by the invention, XML DBMS (Data Base Management System) access control becomes very flexible and configurable.

Description

technical field [0001] The invention relates to the field of XML databases, in particular to an XML document access control method and system. Background technique [0002] XML Database Management System (XMLDBMS) is a database management system aimed at storing and retrieving XML document data conforming to the W3C standard. Since the object it stores is an XML document library, XMLDBMS is essentially an XML document library. [0003] In order to ensure the data security of the XML database management system and ensure that specific XML document data can only be accessed by authorized users, access control is required for data read and write requests. Access control is a function that all types of database management systems (DBMS) need to implement, but the object of access control in relational database management system (RDBMS) is generally a relational table, while the object of access control in XMLDBMS is an XML document. According to the access control of the relat...

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Problems solved by technology

[0005] The first purpose of the present invention is to provide an XML document access control method for an XML database system, to solve the problem of using the traditional way to control XML document authority in the prior art, resulting in the workload of DBA authority configuration and the amount of access control calculation and authority query overhead It is also huge and takes up a lot of processing resources, thereby reducing the overall processing performance of the system.

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