Languagefor Temporal
نویسندگان
چکیده
This paper addresses the issue of visual query formulation for temporal databases. We introduce a number of visual constructs that allow users to build queries in a modular fashion based on a temporal Extended Entity{Relationship Model. These constructs are: Temporal projection, temporal selection, time links, ltering and set operators, and temporal aggregates.
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تاریخ انتشار 1995