Multilevel security for information retrieval systems - II

In this paper we describe multilevel security issues for hypermedia-based information retrieval database management systems. We first summarize the discussion in our earlier paper on the use of object-oriented approach for developing secure information retrieval systems and then discuss in detail how such a system can be augmented by a Linker to provide hypermedia database management system capabilities. In particular, we discuss various types of nodes and links, an architecture for a hypermedia-based information retrieval system, the various functions of such a system including information retrieval, browsing and update operations, and the interface to the underlying multilevel secure information retrieval system. Finally, the concepts are illustrated using an example.