insensitive cursor

基本解释

This example differs from the first example exclusively in the use of a scroll-insensitive cursor.
此示例完全不同于第一个示例，使用了滚动不敏感游标。
Sensitive cursors are the preferred scrollable cursor model for dynamic situations when the application cannot afford to buffer the data from an insensitive cursor.
当程序无法像Scroll-Insensitive型光标一样提供足够缓存时, Scroll-Sensitive型光标可以被替代用来作为动态的可滚动的光标.
The first request to an insensitive cursor fetches all (or many but not all rows when a JDBC driver using “lazy” fetching) of the rows and stores them on the client.
此类型的光标在第一次请求时就获取了所有的数据(当JDBC驱动采用'lazy'方式获取数据时或许是很多的而不是全部的数据)并且储存在客户端.
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