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The efficiency of processing queries in an embedded database is critical for the system performance. The principal mechanism through which an embedded database maintains an optimal level of performance is the database query optimizer. It reduces the response time of a given query and the total time of processing queries. Nevertheless, because of the optimizer's importance to the robustness and flexibility of an embedded database, we outline the embedded database query optimization by generatingdoi:10.7763/ijcte.2017.v9.1161 fatcat:ibbjmnnpv5dfzfbijjmij5wjsa