Unrestricted.2016-11-142011-02-182016-11-141984-12http://hdl.handle.net/2346/19388The role of time in databases is being studied by researchers increasingly. Temporal query languages have been proposed for a number of historical database models. This thesis contains a survey of some important temporal relational database models and their query languages. A new temporal query language is proposed for a temporal database model.application/pdfengInformation storage and retrieval systemsDatabase managementThesis