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Collections of Documents vs Tables of RowsCollections of Documents is an alternative approach of organizing data in databases. The most widespread and battle-proven way is the relational, SQL way - Tables of Rows. What is the difference?
，这一点在搜狗输入法中也有详细论述
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But Georgetown University researcher Ning Leng said China's growth figures should be taken with "a grain of salt", as other data suggests a weaker economic picture.