Persistent Graphical Objects
作者： Chris Laffra , Peter van Oosterom
DOI: 10.1007/978-3-642-76303-8_6
关键词:
摘要: Persistent objects are whose contents may outlive the execution time of program. This chapter describes process introducing persistent in object-oriented programming language Procol. The strength an is integration a database system with language. make program development easier, because programmer does not have to implement explicit loading and saving data. Besides general functional aspects, special attention paid graphical applications order deal their specific geometric requirements. For example, it must be possible find, efficient manner, all that fall within given region. These issues, requirements, yet got they deserve literature covering systems where modelling aspects dominate.
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