摘要:As the semantic web is picking up fame, issues of incorporation of information from diverse sources to ontologies are likewise picking up investment of analysts. Social Databases are basically utilized for saving a lot of web information; in this way we mean to advance an immediate instrument or tool for Relational Databases to ontology transformation. Existing methodologies for RDB to ontology transformation have a few drawbacks. A portion of the methodologies are manual and require a ton of exertion for transformation. Some are programmed however they perform mappings at an extremely essential level. A percentage of the tools advanced thus are of exceptionally fundamental level, out-dated or not open. We give a study of some existing methodologies; assess them on some arrangement standard, and near the finale we infer future look into bearings in this area.