Generally, setting it to True improves performance, but this does not preserve the ordering of database updates within a database transaction.
通常来说，将其设置为True会提高性能，但这样做无法在数据库事务中保持数据库更新的顺序。
More and more people have accepted the convenient and fast transaction form of the electronic commerce, the on-line meal ordering is also become popular.
越来越多的人接受了电子商务这种便捷、快速的交易形式，网上订餐的推出也很快受到了大家的欢迎（略）。
More and more people have accepted the convenient and fast transaction form of the electronic commerce, the on-line meal ordering is also become popular.
越来越多的人接受了电子商务这种便捷、快速的交易形式，网上订餐的推出也很快受到了大家的欢迎（略）。
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