1·The maximum cardinality of an array type is used by DB2 at runtime to ensure that subscripts are within bounds.
DB2 在运行时使用阵列类型的最大基数来确保下标在在限制范围内。
2·The calling program can then pick and choose values from the array as required using known subscripts.
调用程序使用已知下标从数组中选择所需的值。
3·Just I have put these extra subscripts to tell us what is held constant and what isn't.
刚才我写的这些下标，只是标记一下，这是常变量。
4·Now you can drop the subscripts if you prefer.
现在如果你乐意，可以去掉下标。
5·Don't be confused by the subscripts.
别被下标弄迷糊了。