Specification and efficient monitoring of local graph-based constraints in hypermedia systems

摘要: The concept of hypermedia has existed for about fifty years. It became a practical technology in the seventies and widely available eighties. proven quite useful as paradigm information presentation been applied to relevant many diverse fields. However, networks semantic connections that exist systems are often so large complex they become overwhelming people trying find them. This work presents number types constraints representing application semantics way reducing complexity hypermedia. Unlike developed past, those presented this graph-based can be evaluated within local regions system. Also, an algebra on This algebra, itself, used define overview graphs connections. In addition, increases expressive power by allowing definition which applied. Finally, looks at issues efficiency constraint maintenance both base data views. A region caching policy view instantiation method developed. These approaches require only small part database accessed while attempting determine if is violated or some view.