An application can compare the current row change token value of a row with the row change token value that was stored when the row was last fetched to determine whether the row has changed.
应用程序可以将某行的当前行修改标记值与上次取回行时保存的行修改标记值进行比较,以判断行是否发生修改。
A security token can be any value but is typically a symbol, a canonical string that does not exist anywhere else.
一个安全令牌可以是任何值,但通常是一个不在其他地方存在的符号或者规范的字符串。
As the token is specified as a positive rather than negative value, the token taken is worked from left to right.
由于标记被指定为正值而不是负值,提取的值将使用从左到右的顺序。
应用推荐