processing tools and large linguistics resources, some in time proposed and developed ontology based solutions are Semantic Desktop [3], Semantic Security Web Services (SSWS) [1] and Cultural Heritage and the Semantic Web [4]. 

Where Ontology is helping in providing solutions to the document identification, end-to-end service authentication, authorization, data integrity, confidentiality, organizing and sharing of isolated pieces of information problems there it is also facing some limitations which are 
- Natural language parsers can only work over a single statement at a time. 

- Quite impossible to define the boundaries of ontologies of a particular domain's abstract model. 

- Automatic ontology creations, automatic emergence of ontologies to create new ontologies and identification of possible existing relationships between classes to draw the taxonomy hierarchy automatically is required. 

- Ontology validators are restricted and not capable of validating all kind of ontologies e.g. based on complex inheritance relationship. 

- Domain specific ontologies are highly dependent on the domain of the application and because of this dependency it is not possible to find out the general purpose ontologies from them. 

- The process of semantic enrichment reengineering for the web development consists of relational metadata, required to be developed at high speed and in low cost depending on proliferation of ontologies, which is currently also not possible. 

Due to these limitations in ontology Semantic Web is not currently succeeded in attaining the actual goals of completely structuring the information over the web in machine process able format and making advanced knowledge modeled system. 

## References

1. Grit, Dr, Son, N, & Andrew, T, 2004, "OWL-S Semantics of Security Web Services: a Case Study", pp. 240–253, Springer-Verlag J. Davies et al. (Eds.): ESWS, LNCS 3053, Berlin Heidelberg Germany 2. Heiner, S 2002, "Approximate Information Filtering on the Semantic Web", pp. 114–128, Springer-Verlag M. Jarke et al. (Eds.): KI, LNAI 2479, Berlin Heidelberg Germany 3. Mark, S, Pierre, S, Leo, S & Andreas, D, 2006, "Increasing Search Quality with the Semantic Desktop in Proposal Development", In the proceedings of Practical Aspects of Knowledge Management 6th International Conference. (PAKM), Vienna Austria 4. V.R, Benjamins, J. Contreras, M. Blázquez, J.M. Dodero, A. Garcia, E. Navas, F. 

Hernandez & C. Wert, 2004, "Cultural Heritage and the Semantic Web", pp. 433-444, Springer-Verlag J. Davies et al. (Eds.): ESWS LNCS 3053, Heidelberg Germany 5. Tim, B. Lee, James, H & Ora, L, 2001, The Semantic Web, A new form of Web content that is meaningful to computers will unleash a revolution of new possibilities, Retrieved June 30, 2007 from http://www.geodise.org/useful_links/link_semantic.htm 