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10.1 保留检索到此为止,我们已经讨论的所有检索过程涉及到以下几个方面:编制一个可执行的检索指令,最终检索到所希望的集合,然后同联统脱开。然而,有时候当你能够建立一
10.1 Keeping the Retrieval Up to this point, all the search processes that we have discussed involve the following aspects: preparing an executable search instruction that eventually retrieves the desired set and disconnects it from the system. However, sometimes when you can build one