Wan Chang
Abstract
Has built an real time relational data model(RTRDM)in real time database systems in paper of relational data model in real time database systems.This paper discusses all kinds of temporal relational operations on the basis of RTRDM,these of which can devolve upon traditional relational operations when lifespan of relationship is [Now,Now].
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Has built an real time relational data model(RTRDM)in real time database systems in paper of relational data model in real time database systems.This paper discusses all kinds of temporal relational operations on the basis of RTRDM,these of which can devolve upon traditional relational operations when lifespan of relationship is [Now,Now].
Key concepts: Computer science, Relational database, Relational algebra, Relational model, Database model, Database design, Relational database management system, Entity–relationship model