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- W2402472714 abstract "Because conventional spatial databases process the spatial information that is valid at current time, it is difficult to manage historical information efficiently which has been changed from the past to current. Recently, there are rapid increasing of interest to solve this problem so that makes databases to support historical information as well as spatial management at the same time. It can be eventually used in a various application areas. The formal semantics in a database is used to represent database structures and operations in order to prove the correctiveness of them in terms or mathematics. It also plays an important role in database to design a database and database management system. So in this paper, we suggest spatiotemporal domain, object, data, and spatiotemporal geometric/topological operations. And we not only formalize relational algebra/calculus using formal semantics for a spatiotemporal data model, but also show the example of real orld with them." @default.
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- W2402472714 date "1999-01-01" @default.
- W2402472714 modified "2023-09-23" @default.
- W2402472714 title "Formal Semantics of Relational Algebra/Calculus for Spatiotemporal Operator in Spatiotemporal Data Model" @default.
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