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	General Performance Issues Illustrated with a Specific Method that a full scan query plan is used (which is very slow ), as effective indexes cannot be used
	removing members in existing databases priority thread. It also seems that it will be slow as option 2a, as emptying list fields updates
	Inverse OneToMany Mapping and EmbeddedId .06G v 2.9.0_05 ( slow ) find_1_N_1Y() PT20.812S -1.10G/0.46G find_1_N_1Y() PT26.748S +0.29G/0.86G find_1

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