Right, when we do cross products, we are doing an expansion with respect to the first row.
算外积时,依第一行展开。
Percolator was designed to provide cross-row, cross-table ACID-compliant transactions via " snapshot isolation" since many threads on many machines need to transform the repository.
Percolator通过“ 快照隔离”实现了遵从ACID的跨行及跨表事务,从而满足多线程在多台服务器上对文档库进行转换操作的需求。
In a cross join, each row from one table is combined with each row from another table, resulting in what is called a cross product or a Cartesian product.
在交叉联接中,一个表中的每一行与另一个表中的每一行合并,导致生成叉积或卡迪尔积。
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