Abstract:The first generation of databases has emerged since 1970's as hierarchical and network systems that unified data collection and manipulation as a single set of data records. The second generation has started since the early 1980 with the concept of relational databases and some variations such as object databases and deductive databases. The idea of moving databases toward the next generation has proposed since the 1990's as a better system to support new kinds of objects structures and business rules. With th… Show more
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