This column shows how trace-type aspects can supply useful information about the execution of a program.
本月专栏展示了跟踪型的方面如何提供关于程序执行的有用信息。
2
Answer: Yes, you can supply an optimistic concurrency control (OCC) integer column to a given table, and specify that this column is to be used for OCC in the metadata.
答：有的，可以向给定的表提供一个开放式并发控制(occ)整数列，并指定该列供元数据中的OCC使用。
3
Then, for each source, you supply additional @formulas to calculate the value to be used for each column.