Abstract
This paper introduces a heterogeneous distributed database system called LSZ system, where LSZ is an abbreviation of Li Shizhen, an ancient Chinese medical scientist. LSZ system adopts cluster as distributed database node (or site). Each cluster consists of one or several microcomputers and one server. The paper describes its basic architecture and the prototype implementation, which includes query processing and optimization, transaction manager and data language translation. The system provides a uniform retrieve and update user interface through global relational data language GRDL.
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