Action type based access control model for XML documents

With the rapid increase of XML application, XML is becoming the standard of Semi-structured information exchange on Internet. The existed access control becomes more complicated for each operation as a new operation is added. In this paper, we present an action type of access control model. The model uses the action type to classify different operation, which can improve the problem of adding a new operation. At the same time, this paper uses a tree labeling algorithm for transformation processor of XML documents. Some operation can reduce unnecessary retrieval because of the action classification, so it has higher efficiency than that of the existing assess control by filtering nodes.