All Services Programming & Development Programming $50/hr · Starting at $25 Work in multiple data models - relational (RDBMS), object-oriented, and graph-based (RDF). I have a strong interest in social software (asynchronous collaboration) and knowledge management. About $50/hr · Ongoing Download Resume Work in multiple data models - relational (RDBMS), object-oriented, and graph-based (RDF). I have a strong interest in social software (asynchronous collaboration) and knowledge management. Skills & Expertise EngineeringManagementRdbmsRdfSemantic WebSocial SoftwareSoftware Design 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts EngineersManagement Experts