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Strategy 1: One table per subclass (Persons).
策略1：每个子类一个表(Persons)。
youdao
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The pros are similar to the above "Table per Subclass" strategy.
优点和上面的“每个子类一张表”策略相似。
youdao
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The pros are similar to the above "Table per Subclass" strategy.
优点和上面的“每个子类一张表”策略相似。
youdao