Programmers can work transparently with data from these various sources, relying on DB2 II's global query optimizer to select an efficient data access strategy for such work.
程序员可以透明地使用来自这些不同数据源的数据，并通过 DB2 II 全局查询优化器来选择一个有效的数据访问策略。
2
The proposed algorithm is almost as simple for implement as particle swarm optimizer, but can improve the abilities of seeking the global excellent result and evolution speed.