翠鸟是一种埋伏式的捕猎者,它会栖息在河流上方的树枝上仔细观察,一旦有小鱼游过自己的攻击范围内,它就会垂直俯冲下去,抓住鱼,然后飞回树枝上。
The kingfisher is an ambush hunter, perching over a river until a small fish flicks into range.
此举是为实现嵌入式垂直市场的全覆盖。
This move is for full coverage of embedded vertical markets.
通过定义视图而不是显式的表,可以避免垂直模式的主要缺点,即许多查询要求它与本身进行联结,而这种操作是很昂贵的。
By making a view, rather than an explicit table, we avoid the main disadvantage of a vertical schema, namely that many queries require it to be joined with itself, which can be expensive.
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