This monograph is mainly about to discuss the research and development have been performed to attain the goal of implementing a natural language based search mechanism in product data management systems. Going into the details, this research monograph briefly presents the fields of Product Data Management, Natural Language Processing and a project i.e. I-SOAS. Furthermore we also discuss how can natural language based grammar be implemented using semantic web technology i.e. Ontology. Later, in the end of this research monograph we present a prototype developed with the use of discussed concepts and technologies.